Question

A room is 8 m 50 cm long and 6 m 50 cm wide. What should be the length of the mat of width 25 cm to cover the whole floor? Find the total cost of the mat at the rate of Rs 20 per m.

Answer 1

Length of room = 8.50 m

Breadth of room = 6.50 m

Area of room = l x b 

= (8.50 x 6.50) m²

Let length of the mat be x.

Cost of 1 m of mat is Rs 20

Cost of 221 m of mat = 221 x 20 

= Rs 4, 420.