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anonymous
 5 years ago
An aluminum plate is made according to the following dimensions. The outer radius is 10 inches and the
inner radius is 3 inches. Use p = 3.14 as an approximate value. (a) How many square
inches in area is the aluminum plate (the shaded region)? (b) If the cost to construct the plate is $7.50 per
square inch, what is the construction cost?
anonymous
 5 years ago
An aluminum plate is made according to the following dimensions. The outer radius is 10 inches and the inner radius is 3 inches. Use p = 3.14 as an approximate value. (a) How many square inches in area is the aluminum plate (the shaded region)? (b) If the cost to construct the plate is $7.50 per square inch, what is the construction cost?

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radar
 5 years ago
Best ResponseYou've already chosen the best response.0\[(\pi)10^{2}(\pi)3^{2}\]

radar
 5 years ago
Best ResponseYou've already chosen the best response.0that is the area of the plate in sq in. now multiply cost of $7.50 per square in.

radar
 5 years ago
Best ResponseYou've already chosen the best response.0Calculate area as shown in my first response (100pi9pi) then multiply your answer by $7.50

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I still don't know what my answer is.. I think I'm doing something wrong?

radar
 5 years ago
Best ResponseYou've already chosen the best response.0Use your calculator and solve the area. Do this Pi(1009)=91pi. Multiply Pi by 91 the results is the area. Multiplly the area by $7.50 that will be your cost.
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