A right circular cylinder has a base whose area is 154 square feet. If the height of the cylinder is 28 feet, what is its lateral area? use pi= 22/7

Question

A right circular cylinder has a base whose area is 154 square feet.  If the height of the cylinder is 28 feet, what is its lateral area? use pi= 22/7

anonymous · Answer

if area = 154, then radius = $$\sqrt{154/\pi}$$ = 7 feet. 
then circumference = 2 pi r = 44 feet
then lateral area = 44 * 28 = 1232 feet.

anonymous · Answer

well, square feet :P

anonymous · Answer

ok, so I had to find out the area formula of the cylinder first. Then reverse it.

anonymous · Answer

nononononon, just find the area formula of the base, then reverse it to find the radius, and then find the circumference. the circumference * lenght of the cylinder will give you the curved, or lateral area.

anonymous · Answer

right, I just didn't know how to do the first part.

Thank you :)

anonymous · Answer

no problem :D