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Q)

In a right angle ΔABC,A=90 and sides a, b, c respectively, 5 cm, 4 cm and 3 cm. If a force F has moments 0, 9 and 16 in N cm units respectively about vertices A, B and C, then magnitude of F is


( A ) 4
( B ) 9
( C ) 3
( D ) 5

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