A room is l6m long, 8.5m broad and 4.5 m high. It has two doors , each of dimensions 2.5m by 1.5m and three windows , each of dimensions 1.2m by 65cm . The cost of painting the walls of the room from inside at the rate of 90 paise per m² is
Answers
Given : A room is l6m long, 8.5m broad and 4.5 m high
It has two doors , each of dimensions 2.5m by 1.5m and three windows , each of dimensions 1.2m by 65cm .
To Find : The cost of painting the walls of the room from inside at the rate of 90 paise per m² is
Solution:
Area of 4 walls = 2 ( 16 + 8.5 ) * 4.5
= 9 (24.5)
= 220.5 m²
two doors , each of dimensions 2.5m by 1.5m
Area = 2 x 2.5 x 1.5 = 7.5 m²
65cm = 0.65 m
three windows , each of dimensions 1.2m by 65cm
Area = 3 x 1.2 x 0.65 = 2.34 m²
Area of walls to be painted = 220.5 - 7.5 - 2.34 = 210.66 m²
Rate of cost of painting = 90 paise / m² = 0.9 Rs / m²
cost of painting = = 0.9 x 210.66 = 189.594 Rs
≈ Rs 189.6
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Answer:
Given : A room is l6m long, 8.5m broad and 4.5 m high
It has two doors , each of dimensions 2.5m by 1.5m and three windows , each of dimensions 1.2m by 65cm .
To Find : The cost of painting the walls of the room from inside at the rate of 90 paise per m² is
Solution:
Area of 4 walls = 2 ( 16 + 8.5 ) * 4.5
= 9 (24.5)
= 220.5 m²
two doors , each of dimensions 2.5m by 1.5m
Area = 2 x 2.5 x 1.5 = 7.5 m²
65cm = 0.65 m
three windows , each of dimensions 1.2m by 65cm
3 x 1.2 x 0.65 = 2.34 m²
= 220.5 - 7.5 - 2.34 = 210.66 m²
= 90 paise / m² = 0.9 Rs / m²
= 0.9 x 210.66 = 189.594 Rs
≈ Rs 189.6