Question 1123994
side length x

{{{2x^2=10^2}}}

{{{x^2=5*2*5}}}

{{{x=5*sqrt(2)}}}
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AREA of triangle formed
Now x is base and x is height.
{{{(1/2)5*sqrt(2)5*sqrt(2)}}}

{{{25}}}, square cm.


{{{25(1/2.54)(1/2.54)}}}, square inches