If two sides of the right angled triangle are 3 and 4, then what is the length of the third side ?
(A) 5
(B) 7
(C) 5 or 7
(D) none of these.
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Answer:
By using Pythagoras theorem
in right angle triangle
hypotheses square = side1 square + side2 square
= (3)+(4)
= 9+16
=25
taking square root
√25=5
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