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The length and breadth of a rectangle are in the ratio 3 : 7. Perimeter of the given rectangle is 80 m. Find the area of the rectangle.1). 396 m22). 316 m23). 336 m24). 350 m2 |
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Answer» LET the length and BREADTH of the rectangle are 3x and 7x RESPECTIVELY. Perimeter of the rectangle = 80 ⇒ 2(l + B) = 80 ⇒ 2(3x + 7x) = 80 ⇒ 10x = 40 ⇒ x = 4 ∴ The area of the rectangle = lb = 7x × 3x = 21x2 = 21 × 16 = 336 m2 |
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