The area of a right-angled triangle is 42 cm2 . If its perpendicular is equal to 10 cm, find the length of its base.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 8.4 cm.
Height of the right angle triangle = perpendicular of the triangle = 10 cm
The area of a right-angled triangle = 1/2 × base × height
42 = 1/2 × base × 10
42/5 = base
base = 8.4 cm