A triangle has height 15in. and area 120in squared. what is the length of its base?
2 answers:
area for triangle = 1/2 x b x h
area = 120
height = 15
120 = 1/2 * b * 15
divide both side by 1/2
240 = b *15
divide both sides by 15
b = 240/15 = 16
base is 16 inches
check: 1/2* 16 *15 = 120 sq. in.
The formula for the area of a triangle is Area=.5(b)(h)
So fill in what you know:
120=.5b*15
Then solve for b.
120=7.5b
b=16
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