a poster measuring 27 into 16 cm is passed on a sheet of cardboard such that there is a margin of 3.5 cm along its side of the poster find the total area of the margin
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Length of poster = 20cm
breath of poster = 16 cm
3.5 cm margin on each side means
therefore,
length of cardboard = 20+3.5+3.5 = 27cm
breath of cardboard = 16+3.5+3.5 = 23cm
Area of cardboard = l×b = 27×23 cm²
cost = 27×23×1.50 Rs. = 931.5 Rs.
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