a sheet of paper measures 30 cm by 20 CM a strip of width 4 cm is cut off from all around it find the area of the remaining sheet and the area of the cut out strip
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the original sheet is
30*20 = 600 cm^2
the remaining sheet is
30-8 by 20-8
or 22 * 12 = 264 cm^2
so you removed:
600 - 264
30*20 = 600 cm^2
the remaining sheet is
30-8 by 20-8
or 22 * 12 = 264 cm^2
so you removed:
600 - 264
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