The diagonals of a rhombus are 12 cm and 16 cm. What is its perimeter?
Answer and explanation
Correct answer: C. 40 cm
- Step 1: Diagonals of a rhombus bisect each other at right angles: half-lengths are 6 cm and 8 cm. Step 2. Side length = sqrt(6^2 + 8^2) = sqrt(36 + 64) = 10 cm. Step 3. Perimeter = 4 10 = 40 cm. Answer: 40 cm. Why not the others:* 48 is the sum of diagonals 12 + 16 + 20.
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