Question

The volume of a sphere of radius 3r , is​

Answer 1

Here is ur answer :

Radius r of sphere = 3r

Volume of sphere :

= \frac{4}{3} \times \pi \times {(radius)}^{3}

= \frac{4}{3} \times \pi \times {(3r)}^{3}

= \frac{4}{3} \times 27\pi {r}^{3}

= \frac{108 \pi {r}^{3} }{3}

= 36 \pi {r}^{3}

= 36 × 3.14 × {r} ^{3}

= 113.04 {r} ^{3}...

hope it's helps.........