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)
Answer by nerdybill(7384) (Show Source): 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)
.
It would be:
3.50("area of plate" - "area of hole")
.
"area of plate" = s^2 = 6^2 = 36
.
"area of hole" = s^2 = 1^2 = 1
.
That is:
3.50(36-1)
= 3.50(35)
= $122.50
.
Wow, that is one expensive light-switch plate.
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