Question

The area of a rhombus is 240 cm² and one diagonal is 16 cm. Find the second diagonal.

• A. 16 cm
• B. 20 cm
• C. 30 cm
• D. 36 cm

Answer 1

Answer:

C. 30 cm

Solution:

Given:

Area of rhombus = 240 cm²

One diagonal = 16 cm

Concept used:

Area of Rhombus = 1/2 × d₁ × d₂ 

Where d₁, d₂ are the diagonal of the rhombus.

Calculation:

According to the question,

⇒ 1/2 × 16 × d₂ = 240 

⇒ d₂ = (240 × 2)/16 

⇒ d₂ = 480/16 = 30 cm

∴ The second diagonal is 30cm.