Question

A room is 113m long and 9m broad. Find the cost of carpeting the room with carpet 75cm broad at the rate of Rs.6.40 per meter.​

Answer 1

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Class 7>>Maths>>Perimeter and Area>>Perimeter and Area of Squares and Rectangles>>A room is 13 m long and 9 m broad. Find

Question

A room is 13 m long and 9 m broad. Find the cost of carpeting the room with a carpet 75 cm broad at the rate of Rupees 65 per meter.  

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Solution

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Given 

Length of the room =13 m

Breadth of the room =9 m

Area of the room = (length \times breadth)

=(13×9) m2

=117 m2

Let the length required of the carpet be x m

Breadth of the carpet =75 cm=0.75 m

Area of the carpet =(0.75×x) m2

=0.75x m2

For carpeting the room

Area converted by the carpet  = Area of the room

0.75x=117

x=117/0.75

x=156 m

Hence, length of the carpet =15 m

1 m carpet cost = rupees 65

156 m carpet cost will be =(156×65)

= Rupees 10140

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