Ratio of length and breadth of rectangle is 5:3. Diameter of circle is 7/5 of the length of rectangle. Circumference of circle is 24 m more than the perimeter of rectangle. Find the area of rectangle?

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  1. 340
  2. 280
  3. 216
  4. 240
  5. 220

Answer (Detailed Solution Below)

Option 4 : 240
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Detailed Solution

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Calculation

Let length = 5x, breadth = 3x
Diameter of circle = (7/5) × 5x = 7x
⇒ Radius = 7x/2
Circumference = 2πr = 2 × (22/7) × (7x/2) = 22x

Perimeter of rectangle = 2(5x + 3x) = 16x
Given:
22x = 16x + 24
⇒ 6x = 24 ⇒ x = 4

Length = 20, Breadth = 12
Area = 20 × 12 = 240 m²

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