Mathematics
NULL
Medium
Question
The perimeter of a rhombus is 68 cm and one of its diagonals is 16 cm. Find its area.
A
260 cm²
B
240 cm²
✓ Official correct answer
C
280 cm²
D
220 cm²
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A
260 cm²
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B
240 cm²
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C
280 cm²
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D
220 cm²
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Explanation
Side = 17 cm. Half of other diagonal = √(17² − 8²) = 15 ⇒ other diagonal = 30 cm. Area = (1/2) × 16 × 30 = 240 cm².