Question

room is 13 metre and 9 metre to find the cost of carpeting a room with a carpet of its square centimetre @ rupees 65 per metre

Answer 1

Sol:
Length of the room = 13 m
Breadth of the room = 9 m
Area of the room = l × b = 13 × 9 = 117 m2
Let the length of the carpet required = 'l' m
Width of the carpet = 75 cm = 0.75 m
Area of the carpet = Area of the room
⇒ l × 0.75 = 117
⇒ l = 117 / 0.75
⇒ l = 156 m
Length of the carpet required = 156 m
Cost of the carpet per metre = Rs 105
Total cost of the carpet = 156 × 105 = Rs 16380.

Answer 2

Area of the room =as it is rectangular in shape
Area of rectangle=
$l \times b$
Length =13m, breadth =9m
Area=13 x 9 =117
THEREFORE, AREA=117m2

Cost of carpeting the room =65 per metre
=117 x 65= rs. 7605