Question

The carpet for a room 6.6 m by 5.6 m high. It has one door of dimensions 2 m x 1.5 m and three windows each of dimensions 1.5 m x 1 m. Find the cost of whitewashing the walls at Rs. 3.80 per meter square.


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Answer 1

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Step-by-step explanation:

carpet area = 6.6 x 5.6 = 36.96 cm ^2

and the cost given for 36.96 m ^2 = 3960

then, cost of carpet per m^2 = 3960

now,

the area of 70cm carpet for 1m long

=0.7 x 1 = 0.7m^2

hence,

the cost of carpet per meter = 0.7 x 107.14 = rs. 75

Answer 2

Given that length of a room = 6.6 m

Breadth of a room = 5.6 m

Area of a room = Length x Breadth = 6.6 m x 5.6 m = 36.96 m2

Width of a carpet = 70 cm = 0.7 m [Since 1 m = 100 cm]

Length of a carpet = Area of a room

36.96 = Length of the carpet × 0.7

Length of the carpet = 36.96/0.7

Length of the carpet = 52.8 m Cost of the carpet per square = Total cost of the carpet/Length of the room

= 3960/52.8

= Rs. 75