If your asking what 9B coefficient is it's B
The square root of 9 is 3
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Answer:
29/28.
Step-by-step explanation:
Starting with:

Begin by finding a common denominator. A number that contains all of the denominators as a factor would be 28. Change each fraction to contain a denominator of 28:

Add the fractions:

Therefore, the fractions sum up to 29/28.
Answer:
94.2
Step-by-step explanation:
Arc length is basically circumference.
Circumference formula: 2πr
All we need is the radius.
Radius = r
15 x 2 = 30 (diameter)
Then we are going to multiply by pi.
Arc length = 30π OR 94.2