Question

A cylinder shaped object is 24 meters high with diameter of 6.8 meters. An artist plans to paint the entire surface. If one can of paint covers 50 square meters, how many cans will it take to paint the object?

Answer 1

Cylinder Surface Area = (2 • π • r²) + (2 • π • r • height)
It doesn't have "ends" so
Cylinder Surface Area = (2 • π • r • height)
24 meter height and radius = 3.4
Cylinder Surface Area = (2 • π • 3.4 • 24)
Cylinder Surface Area = 512.71

Cans of paint needed = 512.71/ 50

Cans of paint needed = 10.2542
So, you'd need 11 cans of paint