The Central Hall of a school is getting M long and 12.5 M wide a carpet is to be laid on the floor living a strip 50cm wide near the walls and covered find the area of the carpet and also find the uncovered the portion...
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Solution:
Portion uncovered = 50 cm = 0.5 m
Length of the carpet = 18 m - (0.5 m + 0.5
m) = 17 m
Breadth = 12.5 m - (0.5 m + 0.5 m) = 11.5 m Area of the carpet = 17*11.5
= 195.5 sq m
Area of the hall = 18*12.5
= 225 sq m m
Now area of the uncovered portion = area of the hall - area of the carpet
= 225 - 195.5
Area of the uncovered portion = 29.5 sq m
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