Question

What is the surface area of a cylinder if the volume is 2 meters cubed and the height is 5 times the radius?

Answer 1

you need to 1st off find the radius...

\[V = \pi r^2 h\]

using h = 5r you end up with

\[2 = \pi r^2 \times 5h .... so..... 2 = 5\pi r^3\]

solve for r.

then you will be able to find h which is 5r

then find the surface area

Answer 2

or since u have 2=5 pi r^3
keep (pi r^3)= 2/5
volume = 4/3 (pi r^3) = (4/3)*(2/5)=?