Mathematics

Make L the subjects of the formula if (sqrt{frac{42w}{5l}})

Make L the subjects of the formula if (sqrt{frac{42w}{5l}})
  • A.
    (sqrt{frac{42w}{5d}})
  • B.
    (frac{42W}{5d^2})
  • C.
    (frac{42}{5dW})
  • D.
    (frac{1}{d}sqrt{frac{42w}{5}})
Correct Answer: Option B
Explanation

(sqrt{frac{42w}{5l}})
square both side of the equation
(d^2 = left(sqrt{frac{42W}{5l}}right)^2\
d^2 = frac{42W}{5l}\
5ld^2=42W\
l = frac{42W}{5d^2})