in a square side 10 cm. a strip is surrounding all the side width 1.5 cm is cutted. find the area of the strip.
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Answer:
let the side of sheet is 40 cm
area of sheet =(side)^2
= 40^2
= 1600 sqcm
A strip of width 5 cm is cut out all round from a sheet of paper
Let that form a inner square
side of inner square = 40-5-5-5-5
=20cm
area of inner square is (side)^2
= 20 ^2
= 400 sq cm
therefore area of remaining sheet is 40sqcm.
Area of the strip cut out = Area of outer square - Area of inner square
= 1600cm2−400cm2=1200cm2
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