Question
A wire is bent to form a square whose sides are of 55
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 × 55 = 220 cm So, circumference of the circle = 220 cm Radius of the circle = {220/(2π)} = {220 × 7/44)} = 35 cm Area of the circle formed = (22/7) × 35 × 35 = 3850 cm2
The sum of two numbers is 25 and their difference is 15. The ratio of the numbers is:
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