The area of a rectangle is 16 sq. metres and its length is 4 times that of breadth. What is the perimeter of the rectangle?
Question and options
The area of a rectangle is 16 sq. metres and its length is 4 times that of breadth. What is the perimeter of the rectangle?
- 20 m
- 18 m
- 16 m
- 14 m
Answer and explanation
Correct answer: A - 20 m
l = 4b and 4b^2 = 16, so b = 2 m and l = 8 m. Perimeter = 2(8 + 2) = 20 m.
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CUSAT CAT LLM
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