SOLUTION: A square light-switch plate is made which measures 6 inches on each side. A square hole measuring 1 inch on each side is left in the center. If the cost to construct the plate is $
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Question 262719: A square light-switch plate is made which measures 6 inches on each side. A square hole measuring 1 inch on each side is left in the center. If the cost to construct the plate is $3.50 per square inch, what is the construction cost? (Hint: Use A = s2)
You can put this solution on YOUR website! A square light-switch plate is made which measures 6 inches on each side. A square hole measuring 1 inch on each side is left in the center. If the cost to construct the plate is $3.50 per square inch, what is the construction cost? (Hint: Use A = s2)
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It would be:
3.50("area of plate" - "area of hole")
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"area of plate" = s^2 = 6^2 = 36
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"area of hole" = s^2 = 1^2 = 1
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That is:
3.50(36-1)
= 3.50(35)
= $122.50
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Wow, that is one expensive light-switch plate.
