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The length, width and height of a room is 3,2,1
respectively. The length of the room is doubled and height
and width is halved .then percentage decrease in area of
wall. is...........
a) 13.6% b) 27.2% c) 10%
d) none of these
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Answer / vivek
right answer is D,
If LWH is 3,2,1 respectively then area will be 10 SQFT.
in second thought if LWH is 6,1,.5 then area is 7 SQFT
So it decreased by 3 sqft out of 10sqft. which mean 30%.
| Is This Answer Correct ? | 19 Yes | 18 No |
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