Question

The inner and Outer walls of 30 cm long pipe have a diameter of 15 cm and 17 cm respectively find the volume of the material used in pipe.​

Answer 1

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Given,

Height of cylindrical pipe,h=30cm

Outer radius,${r}_{1}$=17cm

Inner radius,${r}_{2}$=15cm

Now,

Volume of the material used

= π(${r}_{1}^{2}-{r}_{2}^{2}$)h

= $\frac{22}{7}×({17}^{2}-{15}^{2})×30$

= $\frac{49500}{7}{cm}^{3}$

= ${7071.42cm}^{3}$

Hence, volume of required material is 7071.42 cubic cm.

This is the best possible answer

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