Question

A cone is 15.3 cm high and the radius of its base is 7.2 cm It is metled and recast into sphere find the radius of the sphere

Answer 1

volumes of both sphere and cone will remain same before and after,,,,
so equating their volumes
$\frac{1}{3} \pi(7.2) {}^{2} (15 .3) = \frac{4}{3} \pi {r}^{3}$
from here you can calculate r....
mark as brainliest if helped

Answer 2

Vol. Of cone = 1/3 * pi* r*r*h
= 1/3*22/7*7.2*7.2*15.3
=830.921 (Approx.) cm^3

Vol. Of sphere = 4/3*pi*r*r*r
830.921 = 4/3*22/7*r*r*r
830.921*3*7 = 88*r*r*r
17449.344 = 88*r*r*r
198.288 = r*r*r
r = 5.83 cm

Please mark as Brainliest.