Mensurationmedium · Past Paper
Find the area of a rhombus whose perimeter is 52 cm and one diagonal is 10 cm.
A120 sq. cm
B240 sq. cm
C60 sq. cm
D130 sq. cm
✓ Correct Answer: A — 120 sq. cm
Side = 13. Half diagonal = 5. Other half diagonal = sqrt(13^2 - 5^2) = 12. Diagonals are 10 and 24. Area = 0.5 * 10 * 24 = 120.
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