Pizza with a diameter of 50 cm weights 559 g. What diameter will a pizza weigh 855 g made from the same cloth (same thickness) and decorated?

Correct answer:

D =  61.8 cm

Step-by-step explanation:

m1=ρV1=ρS1h m1=ρV1=ρS1h  ρ=S1hm1=S2hm2  S1m1=S2m2 πD12/4m1=πD22/4m2 D12m1=D22m2  m2m1=D22D12 m2m1=D2D1  D2=D1m1m2=50559855=61.8 cm 

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