1.  The area of a right angled triangle is 10 sq cm. If its perpendicular is equal to 20 cm, find its base.
A. 1 cm
B. 4 cm
C. 3 cm
D. 2 cm
E. None of the above

Answer: Option A

Explanation:

Given that, area = 10 sq cm,

Perpendicular = 20 cm and Base = ?

Area = (Base x Perpendicular) / 2

⇒ 10 = (Base x 20) / 2

∴ Base = 1 cm