SOLUTION: A square painting is surrounded by a 2.5 cm frame.If the total area of the painting plus frame is 3600 sq cm, find the dimensions of painting
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Question 949644: A square painting is surrounded by a 2.5 cm frame.If the total area of the painting plus frame is 3600 sq cm, find the dimensions of painting
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
Assign variables to everything, and use a drawing to help.
x, the side length of the square painting
w, the uniform width around the painting
A, area of frame plus the painting
Given values:
x, unknown
w=2.5 cm
A=3600 square cm
Total Area,
Solving process can continue completely in symbols but easier here to
plug in the given values now.
Discriminant is
The MINUS 60 form makes no sense, so use the PLUS form.
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