You don't have to use a formula, all you have to do is use basic algebra to modify the equation in front of you. Simply divide both sides by 2pi and you will end up with C/2pi = r. Then, just type it into your calculator and you're good to go!
The answer would be 61m^2
5x11=55
8-5=3
11-9=2
2x3=6
6+55=61
and since it is the area it is squared
hope this helps
11/14 is bigger than 14/27
If it’s a triangle I’m going to assume it’s 70 degrees
