the base is 19cm and the other 2 sides are 12 and 15 so how would i get the area w/o height?

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the base is 19cm and the other 2 sides are 12 and 15 so how would i get the area w/o height?

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## Answers (1)

You'd use Heron's formula, A^2 = s(s-a)(s-b)(s-c), where A = area, s - semiperimeter, and a b and c are the sides.

So basically since perimeter = 46, s = 23 and you'd do 23(23-19)(23-12)(23-15) then do the square root