0.04 × 0.0162 × 0.001 is equal to?

A. 0.000000648
B. 0.0000648
C. 0.00000648
D. None of these

Submitted by: Areesha Khan

Explanation:

$$0.04\times 0.0162\times 0.001$$

Step-by-step solution:

1. Convert the numbers to scientific notation: 0.04=4×10−2,0.0162=1.62×10−2,0.001=1×10−30.04 = 4 \times 10^{-2}, \quad 0.0162 = 1.62 \times 10^{-2}, \quad 0.001 = 1 \times 10^{-3}0.04=4×10−2,0.0162=1.62×10−2,0.001=1×10−3
2. Multiply the numbers: $$4\times 1.62=6.48$$
3. Multiply the powers of 10: 10−2×10−2×10−3=10−710^{-2} \times 10^{-2} \times 10^{-3} = 10^{-7}10−2×10−2×10−3=10−7
4. Combine the results: 6.48×10−7=0.0000006486.48 \times 10^{-7} = 0.0000006486.48×10−7=0.000000648

Thus, the correct answer is 0.000000648.