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
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