Answer:
--- Standard Model
--- Larger Tank
Explanation:
Given
Standard Model

Larger Tank
Diameter = 2.5 * Standard Model
Solving (a): Volume of Standard Model.
The tank is spherical; so, the volume (V) is as follows

Where



So:






Take
as 3.14


Solving (b): Diameter of the larger tank
Diameter = 2.5 * Standard Model

