The respective heights and volumes of a hemisphere and a right circular cylinder are equal, then the ratio of their radii is :	Choose the correct choice from the following answers:
A) 1.225
B) 2.225
C) 3.225
D) 1.825
E) 0.225
Height of hemisphere = radius of hemisphere = Height of right circular cylinder = h   and   radius of right circular cylinder = r , then   (2/3)* pi*h^3 = pi*(r^2)*h   h/r = Root (3/2)= 
<gadget id="calculator">(3/2)</gadget>
<output>3/2 = around 1.5</output>
root 1.5= 1.225   1.225NSWER:1.225
<result>A</result>
The respective heights and volumes of a hemisphere and a right circular cylinder are equal, then the ratio of their radii is :