EPFO 2017 English Medium Solved Paper

Question : 111 of 121

Marks: +1, -0

What is the maximum number of spherical balls of radius 1 cm each that can be placed inside of cubical box of height 10 cm?

Solution:

Side of cubical box = 10 cm
Radius of spherical ball = 1 cm
Diameter of spherical ball = 2 ×radius = 2 cm
=

(5)^{3}=125

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