SOLUTION: if the length of a rectangle is 12 units and its width is 9 units, what is the length of its diagonal?
Algebra.Com
Question 777440: if the length of a rectangle is 12 units and its width is 9 units, what is the length of its diagonal?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Use the pythagorean theorem
a^2 + b^2 = c^2
12^2 + 9^2 = c^2
144 + 81 = c^2
225 = c^2
c^2 = 225
c = sqrt(225)
c = 15
The length of the diagonal is 15 units
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