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side of square

by ontopofit » Mon Feb 02, 2009 3:28 am
The sides of a square region, measured to the nearest centimeters, are 6 centimeters long.
The least possible value of the actual area of the square region is
A. 36.00 sq cm
B. 35.00 sq cm
C. 33.75 sq cm
D. 30.25 sq cm
E. 25.00 sq cm
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by mals24 » Mon Feb 02, 2009 3:52 am
The side of the square when rounded to the nearest cm is 6.
So the least value of the side of square = 5.5
Least area = 5.5^2 = 30.25 sq.cm
Answer D
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by ontopofit » Mon Feb 02, 2009 4:02 am
I had doubt whether 5.5 will be rounded to 5 or 6.
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by mals24 » Mon Feb 02, 2009 4:12 am
4.5-5.4 will be rounded off to 5
5.5-6.4 will be rounded off to 6
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