Question

Find the radius of incentre of an equilateral triangle whose height is 12 cm.
1. 4 cm
2. 3 cm
3. 5 cm
4. 6 cm

Answer 1

Correct Answer - Option 1 : 4 cm

Given:

Height of equilateral triangle = 12 cm.

Formula used:

Radius of incentre of an equilateral triangle = 1/3 × height of equilateral triangle

Calculation:

∴ Radius of incentre of given equilateral triangle = 1/3 × 12 cm = 4 cm