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A roof truss is in the shape of a triangle with height of x feet and a base of 2x + 1 feet. Write a polynomial A (x) that represents the area of the triangle. Find A (5).
17 years ago

Answers

Reiny
Area of a triange = 1/2(base x height)
so
Area of your triangle
= A(x) = 1/2(x)(2x+1)

then A(5) = 1/2(5)(11)
= 55/2 ft^2
17 years ago

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