Last Updated On 16-03-2023 - By Jeesha Sara
The ratio of the height of a room to its semi-perimeter is 2:5. It costs Rs. 260 to paper the walls of the room with paper 50 cm wide at Rs. 2 per m allowing an area of 15 sq. m for doors and windows. The height of the room is
(a)
2.6 m
(b)
3.9 m
(c)
4 m
(d)
4.2 m
The ratio of the height of a room to its semi-perimeter is 2:5. It costs Rs. 260 to paper the walls of the room with paper 50 cm wide at Rs. 2 per m allowing an area of 15 sq. m for doors and windows. The height of the room is
(a)
2.6 m
(b)
3.9 m
(c)
4 m
(d)
4.2 m
Question ID - 50057 :-
The ratio of the height of a room to its semi-perimeter is 2:5. It costs Rs. 260 to paper the walls of the room with paper 50 cm wide at Rs. 2 per m allowing an area of 15 sq. m for doors and windows. The height of the room is
(a)
2.6 m
(b)
3.9 m
(c)
4 m
(d)
4.2 m
|
The ratio of the height of a room to its semi-perimeter is 2:5. It costs Rs. 260 to paper the walls of the room with paper 50 cm wide at Rs. 2 per m allowing an area of 15 sq. m for doors and windows. The height of the room is |
|||||||
|
(a) |
2.6 m |
(b) |
3.9 m |
(c) |
4 m |
(d) |
4.2 m |
Let 
and 
Length of the paper = 
m.
Area of the paper = 
Total area of 4 walls = 
Height of the room = 4 m.
Next Question :
The length, breadth and height of the room are in the ratio 3:2:1. The breadth and height of the room are halved and length of the room is doubled. The area of the four walls of the room will
(a) Decrease by 13.64% (b) Decrease by 15%
(c) Decrease by 18.75% (d) Decrease by 30%
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