Question

ABC is a triangle in which AB = AC = 4 cm and ∠A = 90°. Calculate the area of ΔABC.

Answer 1

Given: AB = AC = 4 cm, ∠A = 90°.

Step-wise calculation:

1. Because ∠A = 90°, AB and AC are the two perpendicular legs (base and height) of the right triangle.

2. Area of a right triangle = `1/2` × leg 1 × leg 2.

3. Substitute values: Area = `1/2` × 4 cm × 4 cm = 8 cm².

Area of ΔABC = 8 cm².