A propane tank is constructed by welding hemispheres to the ends of a right circular cylinder. Write the volume V of the tank as a function of r and l, where r is the radius of the cylinder and hemispheres, and l is the length of the cylinder.

Explanation:

Despite of not being a Physics problem, but a Mathematics problem, the statement have all the information need to find a reasonable answer. The volume formula for a right circular cylinder is the area of a circule multiplied by length:

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2