The weight W kg of a metal bar varies jointly as its length L meters...
MATHEMATICS
JAMB 2005
The weight W kg of a metal bar varies jointly as its length L meters and the square of its diameter d meters. If w = 140 when d = 42/3 and L = 54, find d in terms of W and L.
- A. \(\sqrt{\frac{42W}{5L}}\)
- B. \(\sqrt{\frac{6L}{42W}}\)
- C. \(\frac{42W}{5L}\)
- C. \(\frac{5L}{42W}\)
Correct Answer: A. \(\sqrt{\frac{42W}{5L}}\)
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