the walls and roof of a room 10 feet in length,8 feet in width and 10 feet in height is to be painted .How much will it cost at rupees 5 per square feet?
Answers
Given:
Length of the walls = 10 ft
Width of the walls = 8 ft
Height of the walls = 10 ft.
To find:
Cost of painting 4 walls of the room at a cost of Rs. 5 per square ft.
Solution:
The area of the walls of the room will be:
2*length*height + 2*breadth*height
= 2*10*10 + 2*8*10
= 200 + 160
= 360 ft²
Now when we have got the area, we can calculate the cost of painting the four walls of the room:
Cost of painting = Area * cost of painting per sq. ft
= 360*5
= Rs. 1800
Therefore the cost of painting the four walls of the given room at a cost of Rs. 5 per square feet will be R. 1800.
Given: Length of the walls and roof of a room = 10 ft
Width of the walls and roof of a room = 8 ft
Height of the walls and roof of a room = 10 ft.
To find:
Cost of painting 4 walls of the room and roof at a cost of Rs. 5 per square ft.
Solution:
Area to be painted,A = Area of 4 walls of a room + Area of roof
A = 2(length + breadth) × height + (length × breadth)
A = 2(10 + 8)× 10 + 10 × 8
A = 2(18) × 10 + 80
A = 360 + 80
Area to be painted = 440 ft²
Cost of painting the four walls of the room and roof = Area to be painted × Cost of painting per sq. ft
= 440 × 5
Cost of painting the four walls of the room and roof = ₹ 2200
Hence, the cost of painting the four walls and roof of the room is ₹ 2200.
Learn more :
the perimeter of the rectangle garden used 86 feet of barbed wire. The length of the garden is 7 feet more than its width. Find the dimensions of the garden.
https://brainly.in/questio/35033043
कुनाल क्रमशः 56.5 मी और 92 मी लंबाई और चौड़ाई के आयताकार चिड़ियाघर के चारों ओर बाड़ लगा रहा है। यदि बाड़ लगाने की कीमत ₹15 प्रति मीटर है, तो चिड़ियाघर के चारों ओर बाड़ लगाने का खर्च क्या होगा?
1 ₹4456
2₹4453
3 ₹4455
4₹4432
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