A sphere passes through the eight corners of a cube of side 14 cm. Find the volume (in cm3 ) of the sphere. Take π = 22/7
Answer & explanation
Correct answer: option 1
We know that,
Diagonal of cube = \(\sqrt {3}\) × Side of cube
volume of the sphere = \(\frac{4}{3}\)πr3
We have,
Side of the cube = 14cm
According to the question,
Diagonal of the cube = Diameter of the sphere
So, Diagonal of cube = \(\sqrt {3}\) × 14 = 14\(\sqrt {3}\) cm
Now the radius of the sphere = \(\frac{14\sqrt {3}}{2}\) = 7\(\sqrt {3}\)
Now the volume of the sphere = \(\frac{4}{3}\) × \(\frac{22}{7}\) × (7\(\sqrt {3}\))3
= $4312\sqrt{3}$