Question

Find the surface area of a cylinder with a base area of 49 Π in2 and a height that is twice the radius of its base.

Answer 1

Surface Area of a cylinder is given by (Area of the Bases) + (Lateral Area).

They told us the Area of the base is \(\Large\rm 49\pi\).
Let's match this up with the formula we know for area of a circle.\[\Large\rm A=\pi r^2\qquad\to\qquad 49\pi=\pi r^2\]What do we get for our radius?

Answer 2

k

Answer 3

is the radius 7?

Answer 4

Mmm yes good.

Answer 5

i think the answer is \[294\], right?

Answer 6

\[294\pi \]

Answer 7

in ^2

Answer 8

Mmmm yah that's what I'm coming up with!

Yay good job \c:/

Answer 9

ty!!