Cone in cube

The cube is inscribed cone. Determine the ratio of the volume of cone and cube.

The ratio express as a decimal number and as percentage.

Correct answer:

r =  0.26
r =  26.2 %

Step-by-step explanation:

$r={\displaystyle \frac{\pi }{12}}=0.26$

$r=100\cdot {\displaystyle \frac{\pi }{12}}=26.2\mathrm{\%}$

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