An artist wants to frame a square painting with an area of 400 square inches.she wants to know the length of the wood trim that is needed to go around the painting

ANSWERS

2015-11-06 09:32:20

The formula for the area of a square with sides of length x is A = x2 so x2 = 400 is the equation This equation has 2 solutions, namely x = ±√400 = +20 or -20 The negative solution does not make sense because a length cannot be less than 0. The total length needed to go around the painting is the perimeter of the square, which is P = 4*x = 4*20 = 80 inches

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