(5 * 10^-2)^3 * (2 * 10^3)

Решение:

1. \[ (5 \times 10^{-2})^3 = 5^3 \times (10^{-2})^3 = 125 \times 10^{-6} \]
2. \[ 125 \times 10^{-6} \times 2 \times 10^3 = (125 \times 2) \times (10^{-6} \times 10^3) \]
3. \[ 250 \times 10^{-6+3} = 250 \times 10^{-3} \]
4. \[ 250 \times 10^{-3} = \frac{250}{1000} = 0,25 \]

Ответ: 0,25