<u>Answer-</u>

<u>Solution-</u>
We know that arc length is the product of radius and central angle in radian.
i.e 
Here,

So,




The last one, d, 2/3 < g < 2
Answer: ∞
Step-by-step explanation: First, find the indefinite integral F (x), and then evaluate F (∞)–F(– ∞).
Answer:
n = 225
Step-by-step explanation:
Multiply 15 by 15