A circle of perimeter 28cm is opened to form a ... - JAMB Mathematics 2011 Question
A circle of perimeter 28cm is opened to form a square. What is the maximum possible area of the square?
A
56cm2
B
49cm2
C
98cm2
D
28cm2
correct option: b
Perimeter of circle = Perimeter of square
28cm = 4L
L = (\frac{28}{4}) = 7cm
Area of square = L2
= 72
= 49cm2
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