A sheet of paper measures 30 cm by 20 cm . a strip 4 cm side is cut from it all around. find the area of the remaining sheet and also , find the area of the strip cut out.
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Step-by-step explanation:
length = 30 cm
breadth = 20 cm
total area of the sheet = length×breadth
= 30×20
= 600 cm²
strip of width 4 cm is cut.
(i) length of remaining sheet = 30-4-4=22 cm.
breadth of remaining sheet = 20-4-4=12 cm
area of remaining sheet = 22×12 = 264 cm²
(ii) area of strip cut out = original sheet of paper - remaining sheet of paper = 600-264 = 336 cm² (ans)
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