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The dimensions of a rectangle are 24 cm and 16 cm. If the circumference of the circle is 110% of the perimeter of rectangle, then what will be the area of the circle?1. 550 cm22. 792 cm23. 616 cm24. 921 cm25. 587 cm2 |
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Answer» Correct Answer - Option 3 : 616 cm2 Given: The dimensions of the rectangle are 24 cm and 16 cm. The circumference of the circle = 110% of the perimeter of rectangle. Formula Used: Perimeter of the rectangle = 2 × (length + breadth) Circumference of the circle = 2πr Area of the circle = πr2 Where r = radius of the circle Calculation: Circumference of the circle = 110% of Perimeter of the rectangle ⇒ 2πr = (110/100) × 2 × (24 + 16) ⇒ 2 × (22/7) × r = (11/10) × 2 × 40 ⇒ r = (11 × 2 × 40 × 7)/(10 × 2 × 22) ⇒ r = 14 Area of the circle = πr2 ⇒ (22/7) × 142 ⇒ 22 × 2 × 14 ⇒ 616 ∴ Area of the circle is 616 cm2. |
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