Asked by jackie

If the 3 sides of a triangle have lengths 9m, 12m, and 15m, what is the area of this triangle?
Answered by Damon
that is a 3,4,5 right triangle (25 = 9+16)
therefore if we take 4 as the base, 3 is the altitude
(1/2) b h = (1/2)(4)(3) = 6
Answered by Damon
therefore since the scale ration is 4/1, the ratio of areas is 16 to 1
16* 6 = 96
Answered by Damon
Whoops, sorry, 3/1
9*6 = 54
Answered by Damon
or just brute force do
(1/2)(12)(9) = 6*9 = 54
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