How many coins of 1.4 cm in diameter and 0.4 cm thick are to be melted to form a right circular cylinder of height 16 cm and diameter 3.5 cm?
250
Volume of cylinder/Volume of coin= R^2*H / (r^2*h)=1.75^2*16 / (0.7^2*0.4)=250
Three cylinders of height of 8 cm and diameters 0.24 m, 0.28 m and 0.16 m respectively are melted to form spherical solid balls of diameter 4 cm, then how many number of balls thus formed?
A metal cylinder of base 5 cm and height 12 cm is melted to make n solid cones of height 1 cm and base radius 1 mm. What is the value of n?
A bag contains Rs.1800 in form of one rupee, 50-paise and 25 paise coins in the ratio 3:4:12. How many coins are there of 25 paise?
Two metallic right circular cones having their height 4.1 cm and 4.3 cm and the radii of their bases 2.1 cm each, have been melted together and recast into a sphere.
What would be the diameter of the resultant sphere?
