Question

As part of a community clean-up project, several artists are painting murals on cylindrical trash cans. Each trash can has a height of 4 feet and a radius of 1.8 feet, and each mural completely covers the lateral side of a trash can.
About how much area does each mural cover?

Answer 1

The lateral surface area of a cylinder is:

a=2πrh, we are told that r=1.8ft and h=4ft so

a=2π(1.8*4)

a=2π(7.2)

a=14.4π ft^2

a≈45.24 ft^2  (to nearest hundredth of a square foot)