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B. 5sqrt(2)
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We have
- first side of triangle = √34
- second side of triangle = 4
We need to find third side of triangle
- let , the third side of triangle is x
( x)² = (√34 )² + (4)² ....( by Pythagoras Theorem)
x ² = 34 + 16
x ² = 50
x = √50
x = 5 √2
Hence, the third side is 5√2