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sqrt(5 p^(2)+q^(2)+r^(2)) के बराबर है।...

`sqrt(5 p^(2)+q^(2)+r^(2))` के बराबर है।

A

8

B

2q

C

5p

D

4r

लिखित उत्तर

Verified by Experts

The correct Answer is:
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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