Kitchen

A kitchen rolling pin has a diameter of 78 mm and a length of 315 mm. How many square millimetres of surface does it cover in one full rotation?

Final Answer:

S =  77188.9 mm2

Step-by-step explanation:

d=78 mm s=315 mm  d = 2r  S=π d s=3.1416 78 315=77188.9 mm2



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