Don L. answered 09/22/16
Tutor
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(18)
Fifteen years teaching and tutoring basic math skills and algebra
Hi B, let W represent the width of the basketball court. Then 2W represents the length of the basketball court.
Apply the formula for the perimeter of a rectangle to the problem, P = 2L + 2W.
Substitute:
P = 84 feet
L = 2W
Gives:
84 = 2 * 2W + 2W
84 = 4W + 2W
86 = 6W
Divide both sides by 6:
W = 14
The width of the basketball court is 14 feet.
The length of the basketball court is 2W or 2 * 14, which equals 28 feet.
Check:
2 * 28 + 2 * 14 = 84
56 + 28 = 84
84 = 84
Values check.
Questions?