Question

The formula for the area of a triangle Is A = -bh, in which b represents the length of the base and h

2
represents the helght. If a triangle has an area of 470 mm and the height is 20 mm, what is the measure
of the base?
The measure of the base is
mm.

Answer 1

Explanation:

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the area of a triangle is

base × height / 2

so, we know the area, and we know the height.

therefore

470 = base × 20 / 2 = base × 10

base = 470/10 = 47 mm