A square plywood platform has a perimeter which is 7 times the length of a side, decreased by 21. Find the length of a side.
A) 3
B) 7
C) 1
D) 10

Name: A square plywood platform has a perimeter which is 7 times the length of a side, decreased by 21. Find the length of a side. A) 3 B) 7 C) 1 D) 10
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Question

Quizplus · Accepted Answer

The perimeter of a square is 4 times the length of a side. If the perimeter is 7 times the length of a side decreased by 21, we set up the equation: 4s = 7s - 21. Solving for s, we get s = 7.

A Square Plywood Platform Has a Perimeter Which Is 7