ABC Corporation is required to maintain at least 400 Kilolitres of water, math homework help

ABC Corporation is required to maintain at least 400 Kilolitres of water, math homework help

Q.  ABC Corporation is required to maintain at least 400 Kilolitres of water at all times in its factory, in

order to meet safety and regulatory requirements. ABC is considering the suitability of a spherical

tank with uniform wall thickness for the purpose. The outer diameter of the tank is 10 meters. Is the

tank capacity adequate to met ABC’s requirements?

A: The inner diameter of the tank is at least 8 meters.

B: The tank weights 30,000 kg when empty, and is made of a material with density of 3 gm/cc.


Q.  Consider integers x, y, z. What is the minimum possible value of x^2 + y^2 + z^2 ?

A: x + y + z = 89.

B: Among x, y, z two are equal.