Question

3. Find the cost of carpenting a room 12m long and 8m broad with a carpet 75 cm wide at ` 20 per m 2

Answer 1

First convert 75cm into m .that is 0.75 m.

Area=l*b=12*8=96m2

let length of carpet be'l'

area of carpet=area of room

l*0.75=96m2

l=96/0.75

=128m2

length of carpet required=128 m2

cost of carpet =Rs 20per m2

=128*20

=RS 2560