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If the perimeter of a square is equal to twice its area, what is the length of one of its sides?
A. 2
B. 4
C. 8
D. 3
Correct Answer: A
Explanation/Reference:
Explanation:
Area of a square in terms of each of its sides:
Area = S × S Perimeter of a square:
Perimeter = 4S So if ‘the perimeter of a square is equal to twice its area’:
2 × Area = Perimeter
2 × [S × S] = [4S]; divide by 2:
S × S = 2S; divide by S:
S = 2
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