Question

A sail on a sailboat has a base of 10 ft. and a height of 18 ft. and needs to be sealed with water repellent. One can of water repellent will cover 50 sq. ft., how many cans will be needed to cover the sail?
Ms. Sue
A = hb/2

A = 90 square feet

How many cans will be needed?

Anna
2 cans will be needed.
Ms. Sue
Right.