Question

These cylinders are similar. Find the surface

area of the smaller cylinder. Round to the
nearest tenth.
5 cm
13 cm
Surface Area = [? ] cm2 Surface Area = 236 cm2

Answer 1

85

Explanation:

i did it and got it right

Answer 2

`A=141.6\ cm^2`

Explanation:

The surface area of a cylinder is given by :

`A=2\pi rh`

For larger cylinder, A = 236 cm² and h = 5 cm

So,

`236=2\pi * 5* r\\\\r=(236)/(10\pi)\\\\r=7.51\ cm`

Now, Put r = 7.51 and h = 3 cm to find the surface area of the smaller cylinder.

`A=2\pi * 7.51* 3\\\\A=141.56\ cm^2\\\\A=141.6\ cm^2`

So, the surface area of the smaller cylinder is equal to
`141.6\ cm^2`.