Question

a school has a hall which is 22 M long and 15.5 metre broad a carpet is laid inside the whole living all around a margin of 75 cm from the wall find the area of the carpet and the area of the left uncovered if the width of the carpet is 82 find the cost at the rate of 18 per metre​

Answer 1

Answer:

Area of carpet=313.4375m^2

Area of uncovered area=27.5625m^2

cost=Rs. 313.65

Explanation:

length=22m=2200cm

breadth=15.5m=1550cm

area=l*b

=(2200*1550)cm^2

=3410000cm^2

length of carpet=(2200-75)cm=2125cm

breadth of carpet=(1550-75)cm=1475cm

area of carpet=3134375cm^2=313•4375m^2

area of uncovered region=(3410000-3134375)cm^2

=275625cm^2

=27•5625m^2

new width of carpet =82 cm

new area=(2125*82)cm^2

=174250cm^2

=17•4250m^2

rate=18 per metre

total cost=(17.4250*18)

=313.650