Pizza

Pizza with a diameter 50 cm have weight 559 g. What diameter will have a pizza weighing 855 g if it is make from the same cloth (same thickness....) and same decorated?

Correct result:

D =  61.8 cm

Solution:

m1=ρV1=ρS1h m1=ρV1=ρS1h  ρ=m1S1h=m2S2h  m1S1=m2S2 m1πD12/4=m2πD22/4 m1D12=m2D22  m1m2=D12D22 m1m2=D1D2  D2=D1m2m1=50855559=61.8 cm 



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