Sixth Grade Challenging Math

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6-51)   Answer

                          55.6%

Solution: The area of the entire target is 3.14 x 3^2 = 3.14 x 9 square inches;

The area between the 4-inch and 6-inch diameter circles is:

3.14 x (3^2 – 2^2) = 3.14 x 5 square inches.

The probability of Jody hitting the blue region is the area ratio of the area between the 4-inch and 6-inch diameter circles; and the area of the entire target.

(3.14 x 5)/ (3.14 x 9) = 5/9 = 0.556 = 55.6%