Question

The formula for the area of a triangle is A = 1 2 bh, in which b represents the length of the base and h represents the height. If a triangle has an area of 138 mm2 and the height is 12 mm, what is the measure of the base?

Answer 1

Area of a triangle = (1/2)(base)(height).

Here, 2(area of triangle) = (base)(height), so base = 2(area of triangle) / height.

For this particular triangle, the base is 2(138 mm^2) / (12 mm), or base = 23 mm