SOLUTION: A triangular window of height 15 inches and base 21 inches is to be laminated with a sunblock coating that costs $1.22 per square inch to apply. What is the total cost of coating t

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Question 152031: A triangular window of height 15 inches and base 21 inches is to be laminated with a sunblock coating that costs $1.22 per square inch to apply. What is the total cost of coating the window, to the nearest cent? (Hint: Area of Triangle: A = base*height/2
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
Use the hint...
A = base*height/2
.
The problem gave the following information:
height = 15 inches
base = 21 inches
.
Calculate the area of the triangle by substituting in what we know into:
A = base*height/2
A = 21*15/2
A = 21*15/2
A = 157.5 square inches
.
Since the coating costs $1.22 per square inch, multiply that with the area:
157.5 * 1.22 = $192.15