Question

Good Afternoon !! I have a query regarding mensuration!! A hemispherical lead shot of radius 7cm is cast into a right circular cone of height 49cm.Find the radius of base.
please help me to solve !! ​

Answer 1

Answer:

The answer is 2.1

Step-by-step explanation:

Substitute the values in the formula

Volume of hemisphere = Volume of cylinder

2/3 πr³ = πr²h

2/3 π x 7 x 7 x 7 = π x r² x 49

2 x 7 x 7 x 7/3 x 49 = r²

14 x 49/ 3 x 49 = r²

14/3 = r²

4.6 = r²

Therefore r = 2.1 approx.

hope it will help.