Question

How many metres of carpet 75 cm wide will be required to cover the floor of a room which is 12 m long and 8 m wide

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Answer 1

Answer:

128 m

Step-by-step explanation:

Given: Dimensions of room

           l = 12 m

           w = 8 m

∴ Area of room = l x w

∴                   A = 12 x 8

∴                   A = 96 m²

Thus, area of room is 96 sq. m

It is given that,

Width of a carpet is 75 cm = 0.75 m

but, Area of room = Area of carpet required

∴ Area of carpet = l x w

∴                       96 = l x 0.75

∴                       96/0.75 = l

∴                       l = 9600/75

∴                       l = 128 m

Hence, Length of carpet 75 cm wide required is 128m

Answer 2

Step-by-step explanation:

length of room = 12 m

breadth of room = 8 m

are of room (length × breadth)

= 12 m × 8 m = 96 m

area of room = area of carpet

length of carpet = area/breadth

96m/0.75 = 128 m