Question

if a right circular cone of vertical height 12cm has a volume of 616cm³,then the radius of its base is​

Answer 1

Answer:

Raiud of its base is 7cm

Step-by-step explanation:

Volume of a cone :-

$= \pi {r}^{2} \frac{h}{3}$

But the volume given is 616cm^3 and height is 12cm

A/q,

$= > 616 = \frac{22}{7} \times {r}^{2} \times \frac{12}{3}$

$= > \frac{616 \times 7}{22} = {r}^{2} \times 4$

$= > \frac{616 \times 7}{22 \times 4} = {r}^{2}$

$= > \frac{4312}{88} = {r}^{2}$

$= > 49 = {r}^{2}$

$= > r = 7$

Therefore, radius of its base is 7cm