SOLUTION: How do you find the side length of a square root? For instance, what is the side length of a mural with measuring 18m square?

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Question 984411: How do you find the side length of a square root? For instance, what is the side length of a mural with measuring 18m square?
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
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The side of a mural that is 18 meters square is 18 meters:
18 meters square means a square with 18 meter sides.
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The side of a square mural that is 18 square meters is the square root of 18 square meters or about 4.24 meters.
Using a calculator is easiest:
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sqrt%2818%29=4.24264
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But you can calculate an approximation by hand. To manually approximate the square root:
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First step: estimate. The square root of 18 must be close to 4 (the square root of 16).
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Second step: Divide the number by your estimate. Divide 18 by 4. The result is 4.5.
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Third step: Average. Average the estimate with the result of the division:
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%284%2B4.5%29%2F2=4.25
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Now go back to Step 2, and divide by the average:
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18%2F4.25=4.235
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Average the first two results:
%284.25%2B4.235%29%2F2=4.2425
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4.2425 is a close approximation to the result you would get from a calculator,
but you can continue dividing and averaging until you are satisfied.