In the diagram below shows the cross section of a bridge with a semi circle hole. If the perimeter of the cross section is 24m. Calculate
B. Area of the cross section ( π =22/7)​

In The Diagram Below Shows The Cross Section Of A Bridge With A Semi Circle Hole. If The Perimeter Of

Answers

Answer 1

Answer:

the area is 85.239 m²

Step-by-step explanation:

perimeter of a semi circle = ½πd

24 = ½ x 22/7 × d

24 x 7/11 = d

15.27 m = diameter...

area = ½πr²

= ½ × 22/7 x 7.365 x 7.365

= 85.239 m2


Related Questions

In a team, the ratio of attackers : defenders is 11:7.

Given that there are 36 players in the squad, how many more attackers are there than defenders?

fast answers pls

Answers

Answer:

8 more attackers than defenders

Step-by-step explanation:

36÷18=2

2x11=22

2x7=14

Answer:

8

Step-by-step explanation:

sum the parts of the ratio, 11 + 7 = 18 parts

Divide the number of players by 18 to find the value of one part of the ratio

36 ÷ 18 = 2 players ← value of 1 part of the ratio, then

11 parts = 11 × 2 = 22 ← number of attackers

7 parts = 7 × 2 = 14 ← number of defenders

22 - 14 = 8

There are 8 more attackers than defenders

Write the equation of the line that passes through the points (-6, 4) and (-3,-2).
Put your answer in fully reduced point-slope form, unless it is a vertical or horizontal
line.

Answers

Answer:

y=-2x-8

Step-by-step explanation:

-2-4/-3-(-6)=-6/3=-2

y-4=-2(x-(-6))

y-4=-2(x+6)

y-4=-2x-12

y=-2x-12=4

y=-2x-8

An angle measures 148° more than the measure of its supplementary angle. What is the measure of each angle? AND DONT PLAGERISE!!!

Answers

Answer:

Step-by-step explanation:

Supplementary angles add up to 180°.

“θ is 148° more than its supplement”

Supplement of θ = 180°-θ

θ = (180°-θ) + 148°

2θ = 328°

θ = 164°

Supplement of θ = 180°-164° = 16°

If Jen run for 15 minutes and goes 120meters, how fast did she run?

Answers

Answer:

8 meters per minute

Step-by-step explanation:

120/50=8

Hope this helps! :)

Answer:

8 meters/second

Step-by-step explanation:

Divide the distance(120 meters) by the time(15 minutes) to find the answer. the formula for any speed problem is d/t.

Hope this helps!

pls someone help me i need help​

Answers

Answer:

use the matway well help you get the answers

The answer should be 14x^2-13x+7

H E L P- A G A I N (im dum ok? also no scam answers please.)

Answers

Answer:

a.Equation :y=40-2.5x

b.straight, decreases, the same

Step-by-step explanation:

I need help with this question quick please!!

Answers

the length would be 12

4. Mary wants to select one shirt (white, red, black), one pant (capri,
skinny), and one footwear (shoes, boots). Which outcome is not
possible? *
A white shirt, capri pant, shoes
B red shirt, skinny pant, boots
C blue shirt, capri pant, boots
Dblack shirt, skinny pant, shoes

Answers

C blue shirt, capri pants, boots

because the blue color is not on there

Answer:

B red shirt, skining pant, boots

About how many centimeters are in 6.25 inches if 1 inch is about 2.5 centimeters? Show your reasoning.

heheheheheh im so smarts (not really)

Answers

Answer:

6.25inch=15.625cm

Step-by-step explanation:

1inch=2.5cm

6.25*2.5=15.625cm

4 points
Untitled Question
Kimberly is asked to find mZM. What is her error?
N
sin M _ sin
16 10
sin M=
16.sin 33"
10
16
10
m2M = 0.8714
X Х
33
M
What is Kimberly's error?
A Kimberly did not find the inverse cosine of the value she calculated.
OB. Kimberly did not find the inverse sine of the value she calculated.
OC. Kimberly found the measure of angle N, not M.
D. Kimberly made a computational error.
E Kimberly did not apply the Law of Sines correctly
А

Answers

Answer:

The error is;

B. Kimberly did not find the inverse sine of the value she calculated

Step-by-step explanation:

The given parameters of the triangle ΔLMN are;

[tex]\overline {LN}[/tex] = 16

[tex]\overline {NM}[/tex] = 10

∠L = 33°

By sine rule, we have;

[tex]\dfrac{sin \ M}{16} = \dfrac{sin \ L}{10} = \dfrac{sin \ N}{\overline {LM}}[/tex]

Given that ∠L = 33°, we have;

[tex]\dfrac{sin \ M}{16} = \dfrac{sin \ 33^{\circ}}{10}[/tex]

Therefore, we have;

[tex]sin \ M = 16 \times \dfrac{sin \ 33^{\circ}}{10} \approx 0.8714[/tex]

sin M ≈ 0.8714

[tex]\therefore m \angle M = sin^{-1} \, (sin \ M)\approx sin^{-1} (0.8714) \approx 60.62^{\circ}[/tex]

Therefore, m∠M ≈ 60.62°

m∠M ≠ sin M ≈ 0.8714

Therefore;

Kimberly did not find the inverse sine (sin⁻¹) of the value she calculated

a can contains 24 fluid onces of fruit juice . how many pints of fruit juice does the can contain
A. 3 pt
B. 1 1/2 pt
C. 12 pt
D. 1/3 pt

Answers

Answer:

B 1 1/2 pts

4 fluid ounces = 0.25 pints

24 fluid ounces = 6 pt

I think it's B!!! Sorry if I'm wrong

What is the surface area of this figure?
5 m
5 m
10 m
3 m
O 520 m2
272 m2
O 400 m
O 352 m

Answers

Answer: it’s 400

Step-by-step explanation:

you move right 1 unit and left 3 units. you end at (-4,0). where did u start?

Answers

Answer:

(2,-4)

Step-by-step explanation:

you see (-4,0), then you do the opposite of what it says like it says right 1 unit. then you g left 1 unit. then it says left 3 units. so you go right 3, which results you starting at (2.-4)

Your correct answer should be 2 and -4

Bob and Sue are meeting on a stairway. Bob is at the top and Sue is at the bottom. There are 9 steps
from bottom to top. Bob can skip a step each time since he is going down, Sue will not skip any steps. On
which step will they meet.

Answers

Answer:

Bob is at the top, so he starts at step 9.

Sue is at the bottom, so she is at the step 0 (this is the floor, before stepping on step 1)

Sue climbs from one step on one step.

Then she if she climbs n times, she will be at the step number:

S(n) = 0 + 1*n

And Bob goes down by 2 steps each time, then after he goes down n times, his position will be:

B(n) = 9 - 2*n

We want to see when they meet, then we need to solve:

S(n) = B(n)

1*n = 9 - 2*n

1*n + 2*n = 9

3*n = 9

n = 9/3 = 3

n = 3.

This means that they meet a the step:

S(3) = 3*1 = 3

B(3) = 9 - 2*3 = 9 - 6 = 3

They meet at the third steep.

Given the figure as marked. What is x?

Answers

Answer:

6

Step-by-step explanation:

Using the similarity theorem f the triangle

(4+6)/x+9 = 4/x

10/x+9 = 4/x

Cross multiply

10x =4(x+9)

10x = 4x+36

10x-4x = 36

6x = 36

x = 6

Hence the value of x is 6

If 6 pennies are in each pile how many pennies are in nine piles?

Answers

Answer:45

Step-by-step explanation:

Answer:

This is so easy it's basically 6x9 which isssss, 54 lol,

Step-by-step explanation:

What is an equation of the line that passes through the points (4,-1) and (8,5)?

Answers

Answer:

y=3/2x-7

Step-by-step explanation:

the equation of the line for slope-intercept form is y=mx+b, where  m is the slope and b is the y intercept.

we are given two points: (4,-1) and (8,5)

the equation for slope is (y2-y1)/(x2-x1)

label the points:

x1=4

y1=-1

x2=8

y2=5

now substitute into the equation:

m=(5--1)/(8-4)

m=6/4

m=3/2

the slope of the line is 3/2

here is our equation so far:

y=3/2x+b

we need to find b

since the equation will pass through the points, we can substitute either one into the equation to find b

let's use (4,-1) as an example

substitute into the equation

-1=3/2(4)+b

-1=6+b

-7=b

the y intercept is -7

so the equation is y=3/2x-7

hope this helps!

Leah has just inherited $12,000. She wants to invest the money so that she can increase the value of
her inheritance. What are some of the ways she can do this?
1. Leah wants to invest the $12,000 in an account that pays 4.5% annual interest.
a. Write equations for the amount A(t) that will be in the account after t years, if the interest is
compounded continuously, daily, and monthly. Then, find the amount after 10 years, rounded
to the nearest cent, for each method of compounding. Complete the table

Answers

When interset compounded continuously so the amount after 10 years the amount will be $18819.75, when n = 365 and t = 10 years amount will be $18819.22, when n = 12 and t = 10 years amount will be $18803.91.

What is compound interest?

It is defined as the interest on the principal value or deposit and the interest which is gained on the principal value in the previous year.

We can calculate the compound interest using the below formula:

[tex]\rm A = P(1+\dfrac{r}{n})^{nt}[/tex]

Where A = Final amount

          P = Principal amount

          r  = annual rate of interest

          n = how many times interest is compounded per year

          t = How long the money is deposited or borrowed (in years)

If the interest compounded continuously:

P = $12000, r = 4.5% = 0.045%

[tex]\rm A(t) =12000(e)^{0.045t}[/tex]

When t = 10 years, plug this value in the above expression and calculating, we get;

A(10) = $18819.75

When interest compounded daily:

[tex]\rm A(t) = 12000(1+\dfrac{0.045}{365})^{365t}[/tex]

Plug t = 10 years:

We get;

A(10) = $18819.22

Similarly,

If interest is compounded monthly:

n = 12 and t =10, we get:

A(10) = $18803.91

Thus, when interset compounded continuously so the amount after 10 years the amount will be $18819.75, when n = 365 and t = 10 years amount will be $18819.22, when n = 12 and t = 10 years amount will be $18803.91.

Learn more about the compound interest here:

brainly.com/question/26457073

#SPJ1

I do not get this question: 6b-5b+(-8b)=?

Answers

Answer:

-7b

Step-by-step explanation:

Ok soo you have add the terms.

1b+(-8b)=-7b

Have a good!!

Answer:

-9b

Step-by-step explanation:

i'm assuming this is just combining like terms so if you ignore the (b) you will have

6-5+(-8)

-1+(-8)

-9

then you put back the variable and you get -9b

did u find an answer cause I need it lol

Answers

Of what i can help if you tell about it

What is the vertex angle

Answers

Answer:

sssssßssssssssssßsssssssss

Answer:

In geometry, a vertex angle is an angle associated with a vertex of an n-dimensional polytope. Often a vertex angle of a polygon is referred to simply as an angle of the polygon.

The diameter of a circle is 24 meters. What is the circle's area? Use 3.14 for ​.

Answers

Answer:

To get the circumference, multiply the diameter by pi.  You have the diameter in meters, and you were given an approximate value of pi.  Multiply these 2 numbers, and get the circumference in meters.

Step-by-step explanation:

Answer:

144π or about 452.39

Step-by-step explanation:

Diameter = 24 meters

Radius = diameter/2 = 12 meters

Area of a circle = π*radius*radius = π*radius^2

Area = π*12^2 = 144π = 452.39

Amy has the cards below:
3, 4, 5, 6, 7, 8
Select the letter that matches the probability of the dice landing on 3:
(diagram in the image attached).

Answers

Answer:

B (1/6)

Step-by-step explanation:

The cards she draws doesn't affect what number the dice lands on.  1 every 6 times on average the dice lands on 6 so there is a 1/6 probability represented by B.

15 POINTS PLEASE ANSWER

What equation can be used to find the following: "9 is 45% of what number"

Answers

20 is the answer
9/.45

Answer:

20

Step-by-step explanation:

45% of x=9

x=9/0.45 = 20

simplify 7x-5xy+3-2x-2xy-1

Answers

Answer:

5x-3xy+2?

srry if its wrong

Answer:

5x- 3xy +2

Step-by-step explanation:

Follow the rule of PEMDAS to simplify expressions.

Use the Distributive Property to evaluate the expression.
(16 - 6)2

Answers

Answer:

20

Step-by-step explanation:

The answer is 20 , because you have to use PEMDAS , and the first step is to get rid of the parantheses and evaluate a new equation , the new equation will be : 10(2) and the answer will be 20

CAN SOMEONE PLEASE HELP ME ON THIS

Answers

Answer:

a) $525 CAD

b) $168.30 per day

c)  $38.05

Step-by-step explanation:

a)   1 USD =  500  

    1.05CAD      x

cross-multiply:  x = $525 CAD

b) 504.90 / 3 = 168.30 per day

c)   1 USD =   x  

    1.05CAD   39.95

cross-multiply: 1.05x = 39.95

x = 39.95 / 1.05

x = $38.05 USD

Hi guys can you answer my math question​

Answers

Answer:

4

Step-by-step explanation:

It is. I just know it lol

Answer:

Figure 3

Step-by-step explanation:

30 points available will give brainliest plz helpp need soon
i need it quick

Answers

Answer:

90

hope it's helpful

THANK YOU.

Answer:

90

Step-by-step explanation:

p.l.z give brainliest i lost all my brainliest

What is the approximate volume of this cylinder.

Answers

Answer: 502.655

Step-by-step explanation:

just search cylinder calculator

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