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09 Jun 2020, 01:53
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
75% (01:27) correct
25%
(01:07)
wrong
based on 39
sessions
History
Date
Time
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Not Attempted Yet
A hall is in the form of a rectangular solid with its each side length equal to 12 feet. If the floor and one wall of the hall are to be covered with colored tiles measuring 2 feet by 2 feet, how many such tiles are required?
A. 18
B. 36
C. 64
D. 72
E. 144
09 Jun 2020, 02:32
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As length and breadth is 12 feet. Hence the area of wall is (12)^2 =144, but since the area of floor is also asked the total will be 144+144=288.
Area of sqaure is (2)^2=4
288/4=72
Therefore, D is the answer
Posted from my mobile device
Area of sqaure is (2)^2=4
288/4=72
Therefore, D is the answer
Posted from my mobile device
MayankSingh
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09 Jun 2020, 02:32
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IMO D
Since each side of hall is equal => hall is cubical in shape
(Room) L=B=H=12
(Tile) L=2 , B=2
Area to be covered = Area (Floor + One Wall) = L x B + L x H = 12x12 + 12x12 = 144x2
Area of tile = 2x2 =4
No. of tiles required = 2x144/4 = 72
Ans (D) 72
Since each side of hall is equal => hall is cubical in shape
(Room) L=B=H=12
(Tile) L=2 , B=2
Area to be covered = Area (Floor + One Wall) = L x B + L x H = 12x12 + 12x12 = 144x2
Area of tile = 2x2 =4
No. of tiles required = 2x144/4 = 72
Ans (D) 72
