You have to divide and 512/14=36 and 8/14 and that simplified is 36 and 4/7.
Answer:
Part 1) The exact value of the arc length is 
Part 2) The approximate value of the arc length is 
Step-by-step explanation:
step 1
Find the circumference of the circle
The circumference of a circle is equal to

we have

substitute


step 2
Find the exact value of the arc length by a central angle of 150 degrees
Remember that the circumference of a circle subtends a central angle of 360 degrees
by proportion

step 3
Find the approximate value of the arc length
To find the approximate value, assume

substitute

There are 3260 quarts in 815 US gallons
2x+40=60
2x=20
x=10
Answer:10
The one under the one you picked but im not 100% sure