
To solve the first problem we first need to label the circle we can label the circle by first seeing the small square on m MN which tells us that the angle is a right angle which tells us that it is 90 degrees. Now we can move on to the next part since m KN is a straight line that goes right through the center of the circle we can determine that it is 180 degrees on both sides of the circle. Next we can determine that the m KM is 90 degrees since it is adjacent to m MN. And we can subtract 90-67=23 which means that m KL is equal to 23 and since m ON is adjacent to m KL it is also 23. Finally we can see that m KO can be determined by subtracting 180-23 which should give the answer of 157. But we are only done with labeling the circle. Now we are able to determine that the m KL is equal to 23, m LON is 180, m OM can be determined by adding 23 and 90 together. m KNL can be determined by subtracting 360-23 which gives us the answer of 337, and finally m NL can be determined by adding 90+67=157.

To solve the second problem we first need to see the total length of our arc we can determine this by subtracting the semicircle by our given arc which gives us that the small chunk is 52 degrees. Now we need to determine the size of m SR we can do this by subtracting 90-31 because it is a part of a right angle which gives us the answer of 51. Next we need to know the full length of the arc by adding it all together which gives our total arc to be 211 degrees. Now we can use our arc length formula l=/360 x D times pi. And we also already know that line QT is 19 feet, so when we use inset everything into our formula we should have l=211/360 x 19 x pi. Which gives us our arc length of 4, 534, 072. 181
Finally to solve for the third problem we need to find the circumference of circle R which in order to do we need to fist find the value of our diameter. To determine our diameter we need to use pythagorean theorem a^2 + b^2= c^2. So we have to solve for 7^2 +24^2 =c^2. So after we square all of our numbers our equation should look like 49 + 576 =c^2. Next we need to add 49+576 which gives our equation 625=c^2. But since we are not looking for c^2 we are looking for c we now need to find the square root of 625 which is 25. Now that we know that our diameter is 25.02 we are able to use our circumference formula of C= pi x D. So when we multiply D times pi we get our answer of 78
