Question

The base of a triangle is 21 inches and the height is 12 inches which of these expressions correctly shows how to calculate the area of a triangle

a (21 x 12) divided by 2
b ( 21 + 12) x 2
c (21 + 12) divided by 2
d ( 21 x 12) x 2

Answer 1

A. (21 × 12) ÷ 2

Explanation:

Use the area formula to find the area of the triangle. A = (b × h) ÷ 2

Answer 2

½ x 21 x 12=126

So the answer is a