1.

`sqrt(5 p^(2)+q^(2)+r^(2))` के बराबर है।A. 8B. 2qC. 5pD. 4r

Answer» Correct Answer - C
`{:(P,:,q,:,r),(1,:,2,:,4),(x,:,2x,:,4x):}`
`:. sqrt(5p^(2)+q^(2)+r^(2))`
`=sqrt(5x^(2)+4x^(2)+16x^(2))`
`=sqrt(25x^(2))=5x`
`=5p`


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