Posted by Thomas on Sunday, January 5, 2014 at 4:59pm.
A square has a side of length 2 inches. How long is a side on a square that has twice the area?
please answer and explain

math  Steve, Sunday, January 5, 2014 at 6:44pm
since a = s^2
2a = (√2 s)^2
so, the side grows by √2
check:
if a = 2, s = √2
if a = 4, s = 2 = √2 * √2
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