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 | SaraNextGen Top Answer
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 |
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|
(a) |
2.6 m |
(b) |
3.9 m |
(c) |
4 m |
(d) |
4.2 m |
1 Answer
127 votes
Answer Key / Explanation : (c) -
Let 
and 
Length of the paper = 
m.
Area of the paper = 
Total area of 4 walls = 
Height of the room = 4 m.
127 votes
Answer Link
127