SOLUTION: Vent Grill The Newbury Elementary School needs a new air vent drilled into the wall of the maintenance room. The circular hole that is necessary will have a radius of 7 inches. The

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Question 20633: Vent Grill The Newbury Elementary School needs a new air vent drilled into the wall of the maintenance room. The circular hole that is necessary will have a radius of 7 inches. The stainless steel grid that will cover the vent costs $6.50 per square inch. How much will the vent cost? Use A = π r2 and π  3.14.
Answer by Paul(988) About Me  (Show Source):
You can put this solution on YOUR website!
Area=pi%2Ar%5E2
=pi%2A7%5E2
=pi%2A49
=153.93 (rounded)
6.50*153.93=1000.55
Hence the vent will cost about $1000.55