Circular 21273

The dragon has the shape of a circular section with a central angle of 40 ° and a radius of 35 cm. How much paper do we need to make if 10% is added to the curved ones?

Correct answer:

S =  470.3662 cm2

Step-by-step explanation:

A=40  r=35 cm q=100%+10%=1+10010=1.1  S1=π r2=3.1416 3523848.451 cm2 k=360A=36040=910.1111  S=q k S1=1011 91 S1=1.1 0.1111 3848.451=470.3662 cm2



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