Radius of a solid sphere, r=15‌cm
‌ Volume of a solid sphere ‌‌=‌

4

3

πr3
‌=‌

4

3

×π(15)3cm3.
Now, radius of right circular cone =2.5‌cm and ‌ height, ‌h=8‌cm‌. ‌
Volume of right circular cone =‌

1

3

πr2h
=‌

1

3

π(2.5)2×8
∴ The number of cones =‌

‌ Volume of a sphere ‌

‌ Volume of a cone ‌

‌=‌

‌ 4 3 π×(15)3

1 3 π(2.5)2×8

‌=‌

15×15×15

2.5×2.5×2

‌=270