1. which of the equations below could be used to find the radius of a dinner plate whose area is 255 square inches?

255 = r2
255 =
255 = 2 r

2. which of the following is the best approximation of the area of a circle whose diameter is 14 feet?

44 square feet
88 square feet
154 square feet
616 square feet

3. the spray from a sprinkler creates a circle with a radius of 15 feet. which of the following is the best approximation of how many square feet of grass the sprinkler covers?

47
94
225
707