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A school has a hall which is 22 m long and 15.5m broad. A carpet is laid inside the hall leaving all around a margin of 75cm from the walls. Find the area of the carpet and the area of the strip left uncovered. If the width of the carpet is 82cm,find the cost at the rate of rs 60 per m.

Posted by Vivek Srivastava 6 years, 9 months ago

CBSE > Class 10 > Mathematics

1 answers

Ram Kushwah 6 years, 9 months ago

Length of carpet area=22-(0.75*2=22-1.5=20.5 m

Width=15.5-2.0.75=15.5-1.5=14 m

so area A =20.5 x 14 = 287 m²

Now width of the carpet = 82 cm =0.82 m

Hence length of carpet used in 287 m²area

{tex}\begin{array}{l}=\frac{area}{width}=\frac{287}{0.82}=350m\\\end{array}{/tex}

So cost of carpet= 350 x 60=Rs 21000

0Thank You

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