If a circle is cut from a square piece of plywood, how much plywood would be left over? use 3.14 for pi. one whole side is 28 in

What you need to find is the extra amount of plywood. To do that, you must find the area of the square and the area of the circle and subtract them to find the answer.

Formulas:
area of a square: A = bh
area of a circle: A = 

square measurements:
b = 28
h = 28

circle measurements:
(≈3.14)
r = 14 

A = (28)(28)
A = 784
area of square = 784 in^2

A = 3.14 ()
A = 3.14 (196)
A = 615.44 in^2

784 - 615.44 = 168.56
The amount of plywood left over is 168.56 in^2.

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The answers are 20,30,80,180,960,890,1230,4560. on the first row