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The lengths of the two diagonals of a rhombus are 6 cm and 8 cm. Find the length of its perimeter (in cm).
- A20
- B10
- C40
- D30
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CCommunity
a2 = (d1/2)2 + (d2/2)2
⇒ a2 = 32 + 42
⇒ a = 5
∴ Perimeter of rhombus = 4a = 20
⇒ a2 = 32 + 42
⇒ a = 5
∴ Perimeter of rhombus = 4a = 20