Question

The inner radius of a pipe is 2.1 cm.How much water can 12 m of this pipe hold?

Answer 1

Radius of a pipe = 2.1 cm

Length of the pipe = 12 m = 1200 cm

Then,
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Volume of the pipe = π × r² × h

= $\frac{22}{7}\times 2.1\times 2.1\times 1200$ cm³

= 16632 cm³

= $\frac{16632}{1000}$ litres

= 16.632 litres