A chessboard is made 64 small squares. Suppose a single square on a chessboard has an area of 5 square centimeters. How long is one side of the entire board, rounded to the nearest tenth of a centimeter?
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OpenStudy (anonymous):
Chessboard is square, so it has n x n = 64 squares
how many squares (n) on a side?
If each of the n squares is L x L = 5 cm^2 in area, what is square length, L?
How long is n L?
OpenStudy (anonymous):
320 centimeters as i multiplied
OpenStudy (anonymous):
The choices are:
a. 17.9 cm
b.8.9 cm
c. 2.2
d. 143.1 cm
OpenStudy (anonymous):
sup doug i found u again answering questions!!
OpenStudy (anonymous):
HI!
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OpenStudy (anonymous):
is it 143.1
OpenStudy (anonymous):
Noooo. 8 squares. Each has length sqrt(5 cm^2)=2.24
Thus length of board is 8 x 2.24 =
OpenStudy (anonymous):
17.92
OpenStudy (anonymous):
answer is A
OpenStudy (anonymous):
Quick estimate would be that if each square were a little smaller, 4 cm^2,
t5hen each would be 2 cm on a side and 8 of these would be 16 cm.
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OpenStudy (anonymous):
\0w0/ thanks
OpenStudy (anonymous):
medal for doug he got the prob!
give medal to doug
OpenStudy (anonymous):
im just not sure..
OpenStudy (anonymous):
a is the closest to it be3cause it is 17.9 and i got 17.92
OpenStudy (anonymous):
Be sure. 18 cm is about 7 inches. the other sizes are too big or too small.
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