Answer:
2πr is the formula to calculate
Step-by-step explanation:
Suppose you want to know the distance around a circle. That distance is called the circumference. If you know the distance across a circle which is called the diameter, then you can find the circumference by multiplying the diameter by π.
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b=14 cm
Use pythagorean equation
A^2+b^2=c^2
1^2+b^2=14^2
1+b^2=196
b^2=195
b=13.964
It would take her 45 mins to grade 2 stacks or 3/4 of an hour.
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