Question

A room is 12m long 10m wide. its floor is covered with carpet. find the length of carpet required to cover the floor if the carpet is 2m wide

Answer 1

area of floor = area of carpet
area of floor= l x b
length=12m
breadth=10m
area=12 x 10
           120 m^2
area of carpet = 120
area of carpet is also = l x b
where breadth = 2m
120=l x 2
l=120/2
 =60m 
hence the carpet is 60 m long

Answer 2

Given -

Length of room = 12m

Breadth of room = 10m

Area of floor of room = Area of carpet

$area \: of \: floor = length \times breadth$

$= 12 \times 10$

$= 120\:{m}^{2}$

$area \: of \: carpet = length \times breadth$

$120 = l \times 2$

$l = 120 \div 2$

$l = 60 \: m$