Mathematics High School

find the surface area of the figure below​

Find The Surface Area Of The Figure Below

Answers

Answer 1

Answer:

310.8m²

Step-by-step explanation:

GIVEN :-

Diameter = 9m ⇒ Radius (r) = 9/2 = 4.5mSlant height (l) = 13m

TO FIND :-

Surface area of the whole figure.

FORMULAES TO KNOW BEFORE SOLVING :-

Curved surface area of cone = [tex]\pi rl[/tex] (where r = radius & l = slant height)Curved surface area of hemisphere = [tex]2\pi r^2[/tex] (where r = radius)

PROCEDURE :-

In the figure , the cone is mounted on a hemisphere.

⇒ Radius of cone = Radius of hemisphere = 4.5m

Total surface area of the figure = Curved surface area of both cone & hemisphere.

⇒

Curved surface area of cone = [tex]\pi rl = 3.14 \times 4.5 \times 13 = 183.69m^2[/tex] ≈ 183.7m²Curved surface area of hemisphere = [tex]2\pi r^2 = 2 \times 3.14 \times (4.5)^2 = 127.17m^2[/tex] ≈  127.1m²

∴ Total surface area = 183.7 + 127.1 = 310.8m²

Related Questions

Find the area of the shaded region

Answers

Answer:

Ok so what you should is first find the area for both of the circle

[tex]Area = \pi r^2\\[/tex]

Big circle

you are given the radius which 14mm

[tex]3,14(14)^2 = 615.44 mm^2[/tex]

Small circle

you are given the diameter of the small circle which 14mm

radius = diameter/2

14/2=7mm

[tex]3.14(7)^2 = 153,86mm^2[/tex]

Shaded area means the difference between the 2 areas, in my opinion

so you do 615.44 - 153.86 = 461.58 mm^2

Hope that answers your question

Don't hesitate to comment if you are confused about something :)

Step-by-step explanation:

Which rule best represents the graph shown below?

Answers

Answer:

x=y/3 (supposed to be a fraction with y as the numerator and 3 as the denominator but theres no option for fractions)

OR

y=3x

Step-by-step explanation:

The general term of a sequence is given by Tn=-5n+6... which term in the sequence will be -269?​

Answers

Answer:

55th term

Step-by-step explanation:

Let Tn = -269

Then -269 = -5n + 6

-275 = - 5n

n = 55

I need help please I don’t really understand

Answers

Answer:

hi now i ain't too sure but its C

Step-by-step explanation:

since we r adding it will move to the right side 2 blocks then we go down 5 since its minus

V I don’t know if I can get a hold of

Mr kelly loves to ride horses. to train his horse he uses a circular ring with radius of 10 meters if the horse runs 20 laps around the ring how far will the horse have traveled

Answers

Answer:

1256 meters

Step-by-step explanation:

The distance around the circle (circumference) can be found using the formula [tex]2\pi r[/tex]. r is the radius, which you're given. So 2 * pi * 10 is 62.8 if you use 3.14 as pi. Since the horse went around 20 times, we multiply the circumference by 20. 62.83 * 20 = 1256

If correct i will make u brainliest

Answers

Exact form= 59049/1048576???
Sorry if I’m wrong

Another answer I got is 225/16

what are three terms in this equation ? 4x-2y+3​

Answers

Answer;

They are 3 terms

The terms are the numbers and the variables separated by the minus sign and the plus sign

helppp
5/7 x 3/4 ??

Answers

Answer:

15/28 or 0.5357

Step-by-step explanation:

(Please help!!) Solve: x2+6x+9

Answers

if you're trying to solve for x, and it is equal to zero, then it would be -3. plug it in and it would all cancel out

In a pet adoption center, there were a total of 252 cats and dogs. The number of cats exceeds the number of dogs by 44. Find the number of cats and dogs in the adoption center.

Answers

Answer:

cats = 148

dogs = 104

Step-by-step explanation:

(d + 44) + d = 252

2d + 44 = 252

      -44     -44

2d = 208

divide by 2

d = 104

252 - 104 = 148

PLEASE ANSWER!!!!!!!!!

Answers

Answer:

first option

Step-by-step explanation:

if she is getting 10 years of simple interest and the simple interest earned is $60 and she deposited 1,000

60 * 10 is 600 so the answer would be 1,600

7 - 1/4 X 12 +(3/4+1/2) + 8 ÷ 2+2 X 3 =

Answers

The answer that I found when solving this is (16.125)

the vocbulary of adding and subtracting radicals

Answers

Adding and subtracting radical expressions.

Can you help me please

Answers

45/45/90 triangles have side lengths leg/leg/leg root2
Here the leg is root 7 and the x is in the hypotenuse so x is root 7 * root 2
Simplifies to root 7*2 = root 14

i need help with this problem

Answers

So I only know 2 of the answers one of them so the first one is 50 and the last one I am pretty sure it’s right if you have a second attempt so left hope this helps :)

PLEASE HELP!! I've been stuck on this question for many days now and haven't found a correct answer! Thanks in advance!!!

Darius makes a shirt for $8. He sells the shirt for $18. By what percentage did Darius increase the cost of the shirt?

Answers

The first time I did the math including 8 but we are increasing it so it will just be how much did the price increase from 8 to 18 well I know 100% of 8 is 8 so thats 100% and 25% of 8 is 2 so I added the two and 8 + 8 = 16 + 2 = 18 I added those percents 100 + 25 = 125%

Answer:

225% seems like the best answer.

how many acute angles does an obtuse triangle have​

Answers

Answer:

i think 2

Step-by-step explanation:

ya i think 2

the ratio of boys to girls in a classroom is 7:5 4 boys are added to the class the ratio is now 1:1 find the total number of girls in the class

Answers

14 girls are in the class
the ratio 7:5 is divided by two so it can also be seen as 14:10. Add four boys and the ratio becomes 14:14 which is also 1:1

Factor 9x2 + 42x + 49
Your work should reflect that you used either the Factor Cross method or the Perfect Square Trinomial formula

Answers

109x I think it is so yea sorry if I’m wrong

Find the area. Simplify your answer

Answers

Answer:

Solution given:

length[l]=3x+7

breadth [b]=2x+3

we have

area of rectangle=l×b=(3x+7)(2x+3)

=6x²+14x+9x+21=6x²+23x+21 units ²

Using the formula m= f(x2) - f(x1)/x2 - x1, what is the rate of change for the linear function that contains the
points (-3, 2) and (1,10)?

1/2

8

-4

2

Answers

I Picked B random and got it right

The shape of a lateral face of a pyramid is always an isosceles triangle?​

Answers

Answer:

No.

Step-by-step explanation:

Because the lateral faces of a regular pyramid are congruent isosceles triangles. The altitude of any of these triangles is the slant height of the regular pyramid.

Calcula el Volumen óptimo de pedido, el punto de pedido y el Stock de
seguridad de un producto cuya demanda anual es de 85.000 unidades.
Se estima que el coste de emisión de los pedidos es de 4 € y el coste de almacenamiento
unitario es de 0,50 €.
El plazo normal de envío de los proveedores es de 3 días y el plazo máximo de envío de 5.
Utiliza el año comercial.

Answers

Answer:

I don't speak spanish

Step-by-step explanation:

If there are 2.54 cm in one inch, how many feet do 6096 cm equal? A. 200 ft B. 508 ft C. 2400 ft D. 15,483. 84 ft E. 28,800 ft​

Answers

Answer: A.200 ft

Step-by-step explanation:

You divide 6096 by 2.54. To get the inches. And then you divide that by 12 to get the number of feet

Answer:

200ft

Step-by-step explanation:

“Hunter tutors students in mathematics to earn
money. He earns between $50 and $60 each
week. About 20% of the time he tutors sixth
grade students. Which of the following is a
reasonable estimate of the amount of money
Hunter will earn during the next 3 weeks tutoring
sixth graders?”

Answers

Answer:

Step-by-step explanation:

i need help plz now i am in middle school

Answers

Answer:

4

Step-by-step explanation:

If function f is the parent exponential function , what is the equation of transformed function g in terms of function f?

Replace the value of a to complete the equation.

Answers

Answer:

This problem is acually really simple.

Step-by-step explanation:

all you have to do is replace the a with a 3. SO It would look like this:

g(x)=3f(x)

hope this helps :)

The equation of the function g(x) is g(x) = 3f(x) or g(x) = 3e^x

How to determine the equation of g(x)?

The function f(x) is given as:

f(x)= e^x

The function is stretched by a factor of 3 to get the function g(x)

This means that:

g(x) = 3 * f(x)

Evaluate the product

g(x) = 3f(x)

Hence, the equation of the function g(x) is g(x) = 3f(x) or g(x) = 3e^x

Read more about function transformation at:

https://brainly.com/question/1548871

#SPJ2

Please help I need it!!!
AND I WILL MARK AS BRAINLY :))
Look at this shape:
Which image shows a reflection and why?
A. B. С
​

Answers

Answer:

A

Step-by-step explanation:

The reflection line remained and you can see that the direction changed of the shape and the vertex pointing down on the right is pointing up on the left

An investment made in the stock market decreased at a rate of 12% per year for 25 years . What is the current value of the 100,000 investment? Include your calculations in your final answer

Answers

Answer:$73947.52

Step-by-step explanation:

The investment decreases in value, so the common ratio r is (1.000-0.012), or 0.988. Thus, A = $100,000* (0.988) ^25 = $73947.52 is the current value, after 25 years.

I bought 3 1/4 lbs of apples, 2 2/3 lbs of oranges, 5 3/4 lbs of peaches and 3 1/3 lbs of bananas. How many pounds of fruit did I buy?

Answers

Answer:

[tex]=3\frac{1}{4} + 2\frac{2}{3}+5\frac{3}{4}\\\\[/tex]

=[tex]\frac{13}{4} + \frac{8}{3} + \frac{23}{4}[/tex]

[tex]=\frac{(13*3)+(8*4)+(23*3)}{12} \\\\=\frac{39 + 32 + 69}{12} \\\\=\frac{140}{12}\\\\=\frac{35}{3}\\\\ = 11\frac{2}{3}lbs[/tex]

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