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Sum of circumference of a circle and perimeter of a rectangle is 220 cm while area of circle is 1386 sq. cm. If length of rectangle is \(33\frac{1}{3}\%\) more than radius of the given circle, then find the area of rectangle.1). 408 cm22). 418 cm23). 428 cm24). 448 cm2 |
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Answer» Area of circle = 1386 Πr2 = 1386 ⇒ r = 21 cm Length of RECTANGLE = 21 + (33.33/100) × 21 = 28 cm Circumference of circle = 2πr = 132 cm Circumference of rectangle = 220 – 132 = 88 cm Area of rectangle = 28 × 16 = 448 cm2 |
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