Question

Find the area of an obtuse-angled triangle with a base of 4 cm and a height 7 cm.​

Answer 1

14 cm²

Explanation:

Obtuse angle: more than 90° and less than 180°

The formula for the area of an obtuse triangle is the same as that for any triangle:

• area of a triangle = 1/2 x base x height

Therefore, given:

• base = 4 cm
• height = 7 cm

⇒ area = 1/2 x 4 x 7 = 14 cm²