geometry

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the hight of a triangle is four times the length of the base. find the base and height of the triangle if the area is 18 square inches?

• geometry -

let the base be x units long, where x is a positive number
then the height is 4x units long

Area of triangle = 1/2 base x height
18 = 1/2(x)(4x)
9 = x^2
x = 3

so .....

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