The diagonal of a rhombus are 12cm and 5cm. calculate its perimeter
MATHEMATICS
WAEC 2021
The diagonal of a rhombus are 12cm and 5cm. calculate its perimeter
- A. 26cm
- B. 24cm
- C. 17cm
- D. 34cm
Correct Answer: A. 26cm
Explanation
Perimeter of a Rhombus = 4L or 2√( d1\(^2\) + d2\(^2\))
P = 2√(12\(^2\) + 5\(^2\))
P = 2√(144 + 25)
P = 2√169 = 2 * 13
P = 26cm
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