How many square inches in area is the aluminum plate

Reference no: EM13188789

an aluminum plate is made according to the following dimentions. the outer radius is 9 inches and the inner radius is 3 inches. use x=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 $6.50 per square inch, what is the construction cost?

Reference no: EM13188789

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