Question 482316
x(x+5) = x^2 + 30
x^2 + 5x = x^2 + 30 We can subtract x^2 from each side.
5x = 30
x = 6
The width is 6. 
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check
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11*5 =66m^2
6^2 = 36M^2; + 30m^2 =  66m^2
cleomenius.