Consider a circle (radius R) to be made up of many concentric rings of radius r and thickness dr. Find the area, dA, of one of t
hese rings and integrate from 0 to R to get the area of the circle. Remember, the area of a very thin ring is just the circumference times the thickness. For something a bit more challenging, try to set it up as a sum of thin parallel bars rather than a sum of rings.
1 answer:
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Answer:
47
Step-by-step explanation:
Let a, b, and c be those three numbers.
When two of the three numbers are added at a time, the possible sums are 32, 39, 23. Let
Add these three equations:
Divide this equation by 2:
The sum of all three numbers is 47.
Answer:
m = 5/2
Step-by-step explanation:
Slope Formula:
Simply find 2 coordinates and plug them into the formula:
(2, 4) random
(0, -1) y-int
m = (-1 - 4)/(0 - 2)
m = -5/-2
m = 5/2