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

Answer:

$A=141.6\ cm^2$

Step-by-step 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,

$236=2\pi \times 5\times r\\\\r=\dfrac{236}{10\pi}\\\\r=7.51\ cm$

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

$A=2\pi \times 7.51\times 3\\\\A=141.56\ cm^2\\\\A=141.6\ cm^2$

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

Answer 2

Answer:

85

Step-by-step explanation:

i did it and got it right