SSC CHSL 2021 · PYQ · Mensuration · medium
A rectangle with perimeter 50 cm has its sides in the ratio 1 : 4. What is the perimeter of a square whose area is the same as that of the rectangle?
Answer
The correct answer is D: 40 cm. Sides of rectangle: 2(l+b)=50, l:b=1:4, so b=20, l=5. Area=100 cm².
- A.45 cm
- B.50 cm
- C.36 cm
- D.40 cm✓ Correct
Sides of rectangle: 2(l+b)=50, l:b=1:4, so b=20, l=5. Area=100 cm². Side of square=10 cm. Perimeter of square=40 cm.
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