i want the answer for that

An agitation system in a reactor consists of a flat blade turbine with a disk and six blades. The given conditions and sizes are, D11=1.83m,Di1=0.61m,Wi1=0.122m,Wb1=0.15m,Ni1= 1.5 rps. it is desired to scale up these results for a vessel whose volume is 3 times as large. a) Determine the dimensions of the large tank by using geometric similarity. b) What would be the required impeller speed if the following criteria were used? i. Constant impeller tip speed, ui ii. Constant impeller Reynold's number, NRel iii. Constant power consumption per volume, P/V