Find the altitude of a triangle whose area is 100 cm2 and whose base is 20 cm

I am doing this for an online class and I don't understand how to do this question.
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Problem: Find the altitude of a triangle whose area is 100 cm2 and whose base is 20 cm
I am doing this for an online class and I don't understand how to do this question.

The area of a triangle is calculated as a = 1/2 bh.

100 = 1/2 20h
100 = 10h
10 = h

Answer: the height (or altitude) is 10cm

 

by Level 11 User (78.4k points)

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