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What is the length of an arc with a central angle of 4/3π radians and a radius of 42 centimeters?

Use 3.14 for pi.

Enter your answer, as a decimal, in the box.

Respuesta :

So first you multiply 4.3 by itself which is 18.49 then half of 42 is 21 so you then multiply pi which is 3.14 by 21 multiplied by itself then divide that by your answer and it turns into a percentage

4.3•4.3=18.49

3.14•21^2=1384.74

1384.74/18.49=74.8

So it’s 74.8%