SOLUTION: Find the area of a triangle with an altitude of 13meters and a base of 25meters. What is the cost to construct such a triangle out of sheet metal that costs $4.50 per square meter?

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Altitude of the triangle = 13 m
Base of the triangle = 25 m
Area = (1/2)*base*altitude
= (1/2)*25*13
= 162.5 sq m
Cost of sheet metal /sq m = $4.5
So cost of sheet to make the triangle = 162.5 x 4.5
= $731.25
Good Luck