JAMB Mathematics 2007 Objective — Question 12

Question 12 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2007 Objective paper, with the correct answer and a full explanation.

Make L the subject of the formula d = sqrt(42w/(5L)).

A. 42/5L
B. 42/5dw
C. sqrt(42w)/5dCorrect
D. 24w/5d^2

Explanation

Squaring both sides: d^2 = 42w/(5L). Rearranging: L = 42w/(5d^2), which corresponds to the given option for L in terms of d and w.

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