Answer:
150
Step-by-step explanation:
Sector area = (central angle / 360) * PI * radius^2
sector area = (210 / 360) * PI * 2.3^2
sector area = (7 / 12) * PI * 5.29
<span><span><span>sector area = 9.6944313302
</span>
</span>
</span>
<span>sector area = 9.7 square meters (rounded)
Source:
http://www.1728.org/radians.htm
</span>
Answer: The rate of change decreased.
Step-by-step explanation: