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A square of side 22 cm is made from a single wire. The same wire is then bent to form a circle. The area of the circle formed is (π = 22/7)1). 416 cm22). 343 cm23). 528 cm24). 616 cm2 |
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Answer» Perimeter of a square = 4 × side Given, side of the square = 22 cm ∴ Perimeter of the square = 88 cm Now, the same wire is USED to FORM a circle. ∴ The circumference of the circle formed = perimeter of the square Circumference of a circle = 2πr ⇒ 2πr = 88 ⇒ r = 44/π = 14 cm Area of a circle = πr2 ⇒ Area of the circle formed $(= \frac{{22}}{7} \times {14^2} = 616\;c{m^2})$ |
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