Question
A wire is bent to form a square whose sides are of 99
cm. If the same wire is bent to form a circle, then find the area (in cm2) of the circle formed.Solution
Total length of the wire = 4 × length of the square = 4 × 99 = 396 cm So, circumference of the circle = 396 cm Radius of the circle = {396/(2π)} = {396 × 7/44)} = 63 cm Area of the circle formed = (22/7) × 63 × 63 = 12474 cm2
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