Answers

2016-03-29T18:24:45+05:30
Radius = 0.7 cm
volume = 4/3*pi*r³ = (4×22×7×7×7 )÷(3×7×10×10×10) = 1.44 cm³
density = mass/volume
7.95 = mass/ 1.44
mass = 11.448g
mass of 200 such balls = 2289.6g
3 4 3