If p : q : r = 1 : 2 : 4, then $$\sqrt {5{p^2} + {q^2} + {r^2}} $$ is equal to = Options: A . &nbsp5 B . &nbsp2q C . &nbsp5p D . &nbsp4r

If p : q : r = 1 : 2 : 4, then $$\sqrt {5{p^2} + {q^2} + {r^2}} $$ is equa

Question

If p : q : r = 1 : 2 : 4, then $$\sqrt {5{p^2} + {q^2} + {r^2}} $$ is equal to =

Options:

A . 5

B . 2q

C . 5p

D . 4r

Answer: Option C

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