If ∣∣axb∣∣2+∣∣ab˙∣∣2=400and ∣a∣=5,then write the value of ∣∣b∣∣˙

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Question

If $∣ ∣ a x b ∣ ∣^{2} + ∣ ∣ a \dot{b} ∣ ∣^{2} = 400$ and $∣ a ∣ = 5,$ then write the value of $∣ ∣ b ∣ ∣ ˙$

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Isabella Discussed

∣ ∣ a x b ∣ ∣^{2} + ∣ ∣ a \dot{b} ∣ ∣^{2} = 400

and

∣ a ∣ = 5,

then write the value of

∣ ∣ b ∣ ∣ ˙

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Question Text

∣ ∣ a x b ∣ ∣^{2} + ∣ ∣ a \dot{b} ∣ ∣^{2} = 400

and

∣ a ∣ = 5,

then write the value of

∣ ∣ b ∣ ∣ ˙