Mathematics 2016 JAMB Past Questions - Question 28: Evaluate 0.8x0.43x0.031 / 0.05 x 0.72 x 0.021 correct to 4 significant figure

Correct Answer

D

Explanation

To evaluate the expression \(\frac{0.8 \times 0.43 \times 0.031}{0.05 \times 0.72 \times 0.021}\) and express the answer to 4 significant figures, we can follow these steps:First, calculate the numerator:\(0.8 \times 0.43 \times 0.031 = 0.010856\)Next, calculate the denominator:\(0.05 \times 0.72 \times 0.021 = 0.000756\)Now, divide the numerator by the denominator:\(\frac{0.010856}{0.000756} \approx 14.3849\)Rounding to 4 significant figures, the result is:\(14.38\)Therefore, the evaluated expression, correct to 4 significant figures, is \(14.38\).