math

An A-frame cabin has a triangular front with a base of 30 ft and a height of 20 ft. If the front is to be glass that costs $3 per square foot, what will the glass cost?

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  1. Find the area of the given triangle as step 1.

    A = 1/2(base)(height)....This is the general formula used to find the area of a triangle when base and height are given.

    A = 1/2(30)(20)

    A = 1/2(600)

    A = 300 square feet

    The front will cost $3 per square feet and we found 300 square feet. So, multiply $3 by 300 square feet and you will have the cost of the glass.

    Can you finish?

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  2. If the glass costs $3 per square foot for a rectangular piece and $4.75 per square foot for the circular piece, find the total cost of the glass.

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