Cap

A rotating cone shapes a jesters hat. Calculate how much paper is needed for the cap 54 cm high when the head circumference is 47 cm.

Correct answer:

S =  1269 cm2

Step-by-step explanation:

v=54 cm o=47 cm  o = 2 π r  r=2πo=2 3.1416477.4803 cm  s=r12+v2=r12+542=54 cm  S=π r s=3.1416 7.4803 54=1269 cm2



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