3 years ago

How do I find the surface area ?

1 answer:

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You would have to do base times height divided by 2 then multiplied by because their is 2 triangles then do length time width for the rectangles then add up all the numbers

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Identify the volume of the composite figure. Round to the nearest tenth.

Anna007 [38]

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474.5 ft ³

Step-by-step explanation:

1) Find the volume of the cube

$A=l^3$ where l is the side length

Plug in 9 ft as l

$A=9^3\\A=729$

Therefore, the volume of the cube is 729 ft³.

2) Find the volume of the cylinder

$A=\pi r^2h$ where r is the radius of the base and h is the height of the cylinder

Plug in 3 ft as the radius and 9 as the height

$A=\pi (3)^2(9)\\A=\pi (9)(9)\\A=81\pi \\A=254.5$

Therefore, the volume of the cylinder is approximately 254.5 ft ³.

3) Subtract the volume of the cylinder from the volume of the cube

729 ft³ - 254.5 ft ³

= 474.5 ft ³

Therefore, the volume of the figure is 474.5 ft ³.

I hope this helps!

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