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OpenStudy (anonymous):
A square photo 5cm by 5cm is mounted on a cardboard leaving a margin of 1cm all around it. Find the area of the margin.
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OpenStudy (radar):
Note that you have two squares|dw:1337124840419:dw|
OpenStudy (radar):
Find the area of the big square then subtrtace the area of the little square, the difference is the area of the margin
OpenStudy (radar):
Area of big square would be 7 X 7 = 49 sq cm
OpenStudy (radar):
Area of little square is 5 X 5 = 25 sq cm. You know what do now?
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