Question

Find the area of the triangle whose sides are 12 cm, 16 cm and 20 cm. 
1. 120 cm2
2. 160 cm2
3. 96 cm2
4. 84 cm2

Answer 1

Correct Answer - Option 3 : 96 cm2

Given:

Sides of the triangle are 12cm, 16cm and 20cm.

Formula used:

Area of right-angled triangle = ½ × base × height

Calculation:

Here, (12)² + (16)² = (20)²

⇒ Given sides satisfy PGT theorem

⇒ Given triangle is right-angled triangle

∴ Area of given triangle = ½ × 12 × 16

= 96 cm²