Question

Help finding surface area

Answer 1

Answer:

471.23 km²

Step-by-step explanation:

This is a cylinder.

Here's the formula to the the surface area of a cylinder.

$Surface\:\:Area\:\:\:= 2\pi r(r+h)$

They have given the the diameter of the circle .

There fore we have to find the radius .

d = 2 r

10 = 2 r

5 km = r

Let's find the Surface area now.

$2\pi r(r+h)$

$2 *\pi *5(5+10)$

$10\pi *15$

$150 \pi$

471.23 km²

Hope this helps you.

Let me know if you have any other questions :-)