The area of a rhombus is 96 cm2 and one of its diagonals is 16 cm. What is the length of its side?

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  1. 15 cm
  2. 12 cm
  3. 10 cm
  4. 18 cm

Answer (Detailed Solution Below)

Option 3 : 10 cm
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Detailed Solution

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Given:

Area of a rhombus = 96 cm2

One diagonal = 16 cm

Formulas used:

Concept: The diagonals of a rhombus are perpendicular bisectors.

Area of a rhombus = 1/2 × Diagonal1 × Diagonal2 

Side of rhombus = √[(D1/2)2 + (D2/2)2]

⇒ (1/2) × √[(D1)2 + (D2)2]

Calculation:

According to the question

96 = 1/2 × 16 × Diagonal2 

⇒ Diagonal2 = 12

Now, Side of rhombus = 1/2 × √[162 + 122]

∴ 1/2 × 20 = 10 cm

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