Question

A rectangular floor 4 m x 3 m in dimensions is to be covered by 75 cm wide carpet. If the cost of the carpet is 720 per metre, find the total cost of the carpet.​

Answer 1

Questions.

A rectangular floor 4 m x 3 m in dimensions is to be covered by 75 cm wide carpet. If the cost of the carpet is 720 per metre, find the total cost of the carpet.

Solution.

Area of Rectangular floor in "cm ' is [ 1m = 100cm ]

• $\sf\green{3×100cm×4×100cm=120000}$

Carpet dimensions is " 75 cm

so, needed carpet for floor is - -

• Area of Rectangular floor/carpet wide

Now,

⇨ $\sf\green{120000/75cm }$

⇨ $\sf\green{ 1600cm }$

Needed carpet dimension is 1600

so,cost of 1m( 100cm ) carpet is 720rs

Now,cost of 1 cm carpet is 720/100rs

• cost of 1600 cm carpet is 7.2× 1600rs
• $\sf\red{11520rs. }$