plz answer 11 th question the guy answering will be a brainliast fas
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Answered by
5
Given length of a room = 5m.
Given breadth of a room = 4m.
Given height of a room = 3m.
We know that Area to be white-washed = 2(l + b) * h + (l * b)
= 2(5 + 4) * 3 + (5 * 4)
= 2(9) * 3 + (20)
= 74m^2.
Given the cost of whitewashing per m^2 = 7.50.
Cost of whitewashing 74m^2 = 7.50 * 74
= 555.
Therefore the cost of whitewashing = 555.
Hope this helps!
Given breadth of a room = 4m.
Given height of a room = 3m.
We know that Area to be white-washed = 2(l + b) * h + (l * b)
= 2(5 + 4) * 3 + (5 * 4)
= 2(9) * 3 + (20)
= 74m^2.
Given the cost of whitewashing per m^2 = 7.50.
Cost of whitewashing 74m^2 = 7.50 * 74
= 555.
Therefore the cost of whitewashing = 555.
Hope this helps!
siddhartharao77:
:-)
:-))
Answered by
13
Heya dear user !!!
Here is your answer,
================================
Given : - length, breadth and height of a room.
length = 5m
breadth = 4m
height = 3m
Area of walls = ( lateral surface area )
= 2×(length + breadth) × height
= 2×(5+4)×3
= 2×9×3
= 54m²
================================
Area of upper wall of the room (ceiling)
= length × breadth
= 5×4
= 20m²
================================
Area of four walls + ceiling
= 54 + 20 = 74m²
================================
According to the question
The cost of white-washing the walls of the room and the ceiling per m² = ₹ 7.50
================================
Total cost of white - washing of the walls of room and ceiling
= 7.50 × 74
= ₹ 555
================================
Hence the total cost of white - washing of the walls of room and ceiling = ₹ 555
=================================
Hope it helps.
Here is your answer,
================================
Given : - length, breadth and height of a room.
length = 5m
breadth = 4m
height = 3m
Area of walls = ( lateral surface area )
= 2×(length + breadth) × height
= 2×(5+4)×3
= 2×9×3
= 54m²
================================
Area of upper wall of the room (ceiling)
= length × breadth
= 5×4
= 20m²
================================
Area of four walls + ceiling
= 54 + 20 = 74m²
================================
According to the question
The cost of white-washing the walls of the room and the ceiling per m² = ₹ 7.50
================================
Total cost of white - washing of the walls of room and ceiling
= 7.50 × 74
= ₹ 555
================================
Hence the total cost of white - washing of the walls of room and ceiling = ₹ 555
=================================
Hope it helps.
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