Question

Through the pipe of uniform cross-section (12 cm²) water flows with the speed of 20 cm/s. The volume of water that flows in 1 minute is ______.

Options

• 0.0144 m³

• 0.014 m³

• 144 m³

• 240 m³

Answer 1

Through the pipe of uniform cross-section (12 cm²) water flows with the speed of 20 cm/s. The volume of water that flows in 1 minute is 0.0144 m³.

Explanation:

In 1 minute (60 seconds), the distance traveled by the water is \[20\text{ cm/s} \times 60\text{ s} = 1200\text{ cm}\]. The volume of water flowing through is cross-section \[area \times length = 12\text{ cm}^2 \times 1200\text{ cm} = 14400\text{ cm}^3\], which converts to 0.0144 m³.