a rectangular hall is 22m long and 15.5m broad .a carpet is laid inside the hall leaving the hall leaving all around a mrgine of 75cm from the wall .find the area of the stripe left uncovered . if the width of the carpet is 82 cm,find it's cost at the rate of ₹124 per metre
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The area of the hall is 22m x 15.5m = 341 m^2
The carpet is (22 - 2 * 0.75) * (15.5 - 2 * 0.75)
= (22 - 1.5) * (15.5 - 1.5)
= 20.5 * 14 = 287 m^2
The portion uncovered is 341 m^2 - 287 m^2 = 54 m^2
A meter length of carpet is 1 m * 0.82 m = 0.82 m^2
287 m^2 / 0.82 m^2 = 350 m of carpet
350 m × 124= 43400
The carpet is (22 - 2 * 0.75) * (15.5 - 2 * 0.75)
= (22 - 1.5) * (15.5 - 1.5)
= 20.5 * 14 = 287 m^2
The portion uncovered is 341 m^2 - 287 m^2 = 54 m^2
A meter length of carpet is 1 m * 0.82 m = 0.82 m^2
287 m^2 / 0.82 m^2 = 350 m of carpet
350 m × 124= 43400
vatsal14:
no wrong answet
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