Mathematics High School

The radius of a circular board is 3.5 meters. If the cost of paint is $4/m squared, estimate the cost of painting the board

Answers

Answer 1

Answer:$154

Step-by-step explanation:

Given

the radius of the circular board is [tex]r=3.5\ m[/tex]

The cost of paint is [tex]\$4\ \text{per}\ m^2[/tex]

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

Area of board

[tex]\Rightarrow A=\pi r^2\\\\\Rightarrow A=\dfrac{22}{7}\times 3.5^2=38.48\ m^2[/tex]

Cost of painting

[tex]\Rightarrow C=38.48\times 4=153.95\approx \$154[/tex]

Related Questions

pls help :) plssssss

Answers

Answer:

I'm kinda guessing 35 degrees.

Step-by-step explanation:

It was simple math and I don't know if there's a certain way you are supposed to do this. Sorry if I'm incorrect.

Answer:

35 degrees im pretty sure

Step-by-step explanation:

goodluckk

Based on the quadratic graph provided below, determine the characteristics of the graph requested:

Answers

Answer:

This hurt my head

Step-by-step explanation:

simplify.
(14h⁴︎+3h³) - (9h⁴︎+2h³)

Answers

Answer:

31874

Step-by-step explanation:

I think that's right?

please tell me

(38416h+27h)-(6561h+8h)
38443h-6569h
=31874h

Urgent please help..

Answers

Answer:

18π

Step-by-step explanation:

Lateral Surface Area = 2πrh

Plug in the numbers into the equation.

but leave the pi

find the value of x and classify the triangle

Answers

Answer:

x = 91 degrees

It is an obtuse scalene triangle.

Step-by-step explanation:

A luxury chairs manager found that an employee made 3/4 of a chair every 3/8 of an hour
How many chairs does the employee make per hour?

Answers

Answer:

Step-by-step explanation:

(3c/4)/(3h/8)

(3c/4)(8/3h)

(24/12)c/h

2 c/h

So employee can make 2 chairs in one hour.

What is the value of x?

Answers

Answer:

46 degrees

Step-by-step explanation:

Find Larger Triangle Missing Angle:

180-(85+53) = 180-138

= 42 degrees

Use Vertical Anlges to find smaller traingle missing angle is also 42 degrees.

Find X:

180-(92+42) = 46 degrees

Answer:

46°

Step-by-step explanation:

Measure of vertical angle = 180° - ( 85° + 53°)

= 180° - 138°

= 42°

x + 42° + 92° = 180°

x + 134° = 180°

x = 180° - 134°

x = 46°

Esgetteit give me a funney joek plox plox

Answers

Answer

why cant a orfian play baseball..... they dont know where home is.

Step-by-step explanation:

Is this wrong if so plssss give me the answer

Answers

Answer:

30 not -30 x

Step-by-step explanation:

6x = 6(5) = 30

iI hope im right!!

Someone please help this is due in 1hr!!!!!!!

Answers

1.
3 students
5 adults

2. Starting with hats $43-30=13
13/2= $6.50 per hat
Gloves 30-13=17
17/2=$8.50 per pair of gloves

I got it wrong i need help please

Answers

Answer:

Step-by-step explanation:

thats a right angle, 90 degrees total.

90- 46 = 44.

Try 44 !!

What is the difference between solving this equation: x - 4 = 17 AND this equation : 5x - 1 = 24 ?

Answers

Answer: See explanation

Step-by-step explanation:

x - 4 = 17

Collect like terms to get the value of x

x = 17 + 4

x = 21

5x - 1 = 24

Collect like terms to get the value of x

5x = 24 + 1

5x = 25

Divide both side by 5

5x/5 = 25/5

x = 25/5

x = 5

Solve for X. Please help! 35 points

Answers

5x+3=6x-4
-x=-7
X=7
Hope this helps!

what is the constant term in the expression 8 * y + 9x ^ 2 y - 5x -2

A - 5
B - 2
c 8
d 9

Answers

answer is

-2

that is option b

11r-12r what is the answer

Answers

Answer:

-r

Step-by-step explanation:

Answer:

Negative R

Step-by-step explanation:

-R

Help me pls. literally can’t figure it out.
click pic to make it bigger thanks.

Answers

x: -6
y: 1
I hope this helps

Help :) please I’ll give the crown:)

Answers

Answer:

50 min

Step-by-step explanation:

Convert the hours and minutes to pure minutes. 1hr40min =60min +40min= 100min and 2.5hrs =2(60min)+30min=150min. Then subtract 150 from 100 to get 50 min longer.

Help me please!
I don’t understand this

Answers

His total earnings are $200

A person stands 6 feet tall. The distance from the top of their head to the end of their
shadow on the ground is 10 feet. How long is their shadow? Round to the nearest
tenths where necessary.

Answers

Answer:

It's quite simple and there is no need for rounding, the answer should be 8ft

Step-by-step explanation:

Here's why,

This problem can be solved with the Pythagorean Theorem, since in draws a triangle.

The picture should explain it, let's double check:

6^2+8^2=10^2

36+64=100

Looks like it checks out

Answer:

I agree, the answer should be 8ft

Find the value of x. Round to the nearest degree.
19
x
9

Answers

Answer:

hhhhhhhsee

Step-by-step explanation:

On Friday, 150 people went to see “Ode to Algebra” performed in the school auditorium. Both c children and a adults attended the performance.

Answers

Answer:

Step-by-step explanation:

50 people went to see “Ode to Algebra” performed in the school auditorium. If the number of children that attended the performance was c, how many adults attended? Follow • 2. Add comment. More. Report ... Subtract C from both sides and the result is A = 150 - C. In other words, the total Adults is the ...

I need to know the answer plzzzz

Answers

Answer:

your answer will be B. y = | x+4 | - 2

Step-by-step explanation:

hope it helps you

have a nice day!!

Answer:

its i either c or b but i would chose C.

Step-by-step explanation:

HELP PLZZZ URGENT I NEED HELP RN PLSSSSSSS

Answers

Answer:

0 from the x axis, 5 from the y-axis

Step-by-step explanation:

Coordinates are (x,y).

X axis = 0 and y axis = 5

What is this number rounded to the nearest whole number?

Answers

20
hope that helps xxo

Answer:

Step-by-step explanation:

In the tenths place, it is 7 so it rounds up.

19 rounded is 20.

Hope this helps =]

Please help me with this asap ! Find the perimeter!

Answers

Answer:

70 ft is the answer

hope it helps and your day will be full of happiness

Answer:

i'm pretty sure its 70ft

Step-by-step explanation:

hope this helps :p

Porfavor: Elabora un problema matemático relacionado con tu vida cotidiana donde utilices “adición y sustracción de números con signo” y el resultado sea - 9

Answers

Answer:

Queremos hacer un problema donde tengamos adición (a + b) y substracción ( a - b) de números con signo, de tal forma que el resultado final sea 9.

El caso más simple para este tipo de problemas es algo como:

"Vas a un mercado a comprar un par de productos, el producto A cuesta $A, y el producto B cuesta $B, si solo tenés un billete de $C, cuanto será el vuelto?"

Bueno, el vuelto va a ser la diferencia entre lo que vos entregáis, $C, y el costo total de los productos que compras ($A + $B)

Entonces el vuelto va a ser:

vuelto = $C - ($A + $B)

Y queremos que el resultado de este problema sea 9, entonces podemos escribir:

vuelto = $9 = $C - ($A + $B)

Ahora debemos encontrar los valores de las incógnitas.

Podemos simplemente definir dos de ellas y encontrar la tercera, por ejemplo si $C = $20 y $A = $2, entonces:

$9 = $20 - ($2 + $B)

$9 = $20 - $2 -$B

$9 = $18 - $B

$9 - $18 = -$B

-$9 = -$B

Entonces $B será = $9.

Y el problema podría escribirse como:

"Vas a un mercado a comprar un par de productos, el producto A cuesta $2, y el producto B cuesta $9, si solo tenés un billete de $20, cuanto será el vuelto?"

Simplify: 4x^3+5y^3+2x^3+7y

A: 6x^3+5y^3+7y
B: 6x^6+12y^4
C: 6x^6+5y^3+7y
D: 9xy^3+2x^3+7y

Answers

C because they added up to that number

I NEED HELP!!! ASAP!!!

Answers

Answer:

Step-by-step explanation:

In the picture, the estimated slope goes down, so it has to be negative, eliminating 2, B and D

It isn't a gradual line, as 6x is, so that is eliminated.

When we look at the estimated line, we can count out on the grid 3 to the right and 4 down, doing that a few times. If you then connect the dots, it will be a line probably very close to your estimate.

Perimeter of a cube, in a cube? What?

Answers

Answer:

158

Step-by-step explanation:

I need help on this one please

Answers

Answer: 66 degrees

Step-by-step explanation:

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