Question

The radius and height of a metallic cylinder are 4.2cm and 5.6cm respectively. It is melted and recast into a sphere. find the radius of the sphere .

Answer 1

here is your answer
Volume of cylinder =Volume of sphere

pie r^2h=4/3pier^3
4.2×4.2×5.6=4/3r^3r
×34.2×4.2×5.6/4=r^4
r^3=74.088
r=4.198

Answer 2

it's easy just think and make the calculation strong

the volume of cylinder is equal to sphere

so the calculate the equation

and get the answer

tip don't put the value or pie

the answer should be 21/5