Material 24841

The diameter of the ball screen is 30 cm. How many m2 of fabric do we need to make if we add 5% of the material to be sewn?

Correct answer:

S =  0.1484 m2

Step-by-step explanation:

D=30 cm m=30:100  m=0.3 m r=D/2=0.3/2=203=0.15 m q=100%+5%=1+1005=1.05  S=2π r2 q=2 3.1416 0.152 1.05=0.1484 m2

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