find the cost of painting the walls of a room if the room is 4 m 50 cm high and each side of the room is 6 m long the cost of painting is rs 10 per sq m.
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the cost of painting the walls is 108000 Rs
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The cost of painting the wall at Rs 10 per square metre = Rs 1080
Step-by-step explanation:
Given: The room is 4 m 50 cm high:
Height = 4.5 m
Each side of the room is 6 m long:
Length = Breadth = 6 m
We know that:
A room have 4 wall.
Formula used:
C. S. A. of rectangle = 2h(l + b) sq. unit
Where,
C. S. A. = Curved surface area
l = Length
b = Breadth
h = Height
Now, Finding the area of the four wall:
Area of four wall = 2 × 4.5 (6 + 6) m²
Area of four wall = 9 × 12 m²
Area of four wall = 108 m²
Finding the cost of painting the wall:
Given: Cost of painting 1 m² wall = Rs 10
∴ Cost of painting 108 m² wall = Rs 10 × 108
∴ Cost of painting 108 m² wall = Rs 1080
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