2.
cm wide.
3
A rectangular sheet of paper is 12-сm long and 10
cm
2
Find its perimeter.
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1
perimeter = 2(l+b)
perimeter = 2(l+b) = 2(12+10)
perimeter = 2(l+b) = 2(12+10) = 2×22
perimeter = 2(l+b) = 2(12+10) = 2×22 = 44 cm
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