Question

Find the surphace area of a cylander in terms of "PI"
Photo attached

Answer 1

#8

Answer 2

Just use the formula for the surface area of a cylinder.\[A_{cylinder} = 2 \pi r (r + h)\]Where r is the radius, h is the height.

Answer 3

oiy, um okay?
so 2 PI2 (2+8)

Answer 4

Yeah, thats it for #8, now just simplify it.
A = 2 * pi * 2 * 10 = 40 pi

Answer 5

Be sure to have the correct unit for area by the way, which for #8 would be cm^2.

Answer 6

so the answer is 40 PI cm ^ 2 ?

Answer 7

Yup =)