Question

An iron rod of diameler 0.5 inches is made by melting five iron spheres of radius 1 inches.
What is the length of the iron rod in meters? [Take n = 3.14] Ans. 2.71m​

Answer 1

Answer:

Area of sphere=area of cylinder

4/3pie r square=pie r square h

4/3*3.14*1cube=3.14*0.5*0.5*h

314*1/3*25=157h/14

314*1*14=157h*75

4936=11775h

h=2.6