1. How many hemispherical balls can be made from a cylinder 56 cm high and 12 cm diameter, when every ball being 0.75 cm in radius ?
Write Comment
Comments
By: anil on 05 May 2019 02.28 am
Radius of cylinder = $$r=6$$ cm and height = $$h=56$$ cm => Volume of cylinder = $$pi r^2h$$ = $$pi imes(6)^2 imes56=2016pi$$ $$cm^3$$ Radius of hemisphere = $$R=0.75$$ cm => Volume of hemisphere = $$frac{2}{3}pi (R)^3$$ = $$frac{2}{3}pi imes(0.75)^3=0.28125pi$$ $$cm^3$$ $$ herefore$$ Number of balls made = $$frac{2016pi}{0.28125pi}=7168$$ => Ans - (D)
Terms And Service:We do not guarantee the accuracy of available data ..We Provide Information On Public Data.. Please consult an expert before using this data for commercial or personal use