Susan is putting a circular shaped flower garden in her back yard. The dimensions of her back yard is 30 ft by 15 feet. The radius of her flower garden is 7 feet. What is the area of just the grassy part of her lawn (hint: area of rectangle minus are of circle).

I want to put in a cement patio and I need to order cement. If the dimensions of my new patio are 15 ft. by 10 ft and I want the cement to be 6 in. deep....... how much cement do I need to order.

Your answer should be in cubic feet.

Answer: 15ft x 10 ft x .5 ft = 75 cubic feet of cement