Answer: 
Step-by-step explanation:
Given
The central angle of a sector measures 
The radius of the circle is 
The area of the sector is given by

Insert the values

Answer:
-22.75
Step-by-step explanation:
Answer:
c=2.1 and d is, well check my explanation, theres a possible three answers because this website is , not the <em>best</em>
Step-by-step explanation:
c is 3 divided by √2 which is 1.5√2 and in decimal its 2.12.... and so this rounds down to 2.1
d should be 1 but im guessing it messed up so its either 1√3 or 2√3 depending on where it is, and 1√3 rounds to 1.7 and 2√3 round to 3.5