My answer is - 242,181,818,181,818,000,000,000 bananas.
But curious to figure out what you guys get.
Equal to the number of bananas thrown at whichever female poster joins AF. It’s probably why we have no girls here any more.
Negative bananas…whaaaaa, how?
Bananas are an outflow??? 
I just put that there to make it easier to read.
The circumference of the earth is about 24,000 miles, so its radius is about 24,000 / 2_π_ miles ≈ 3,820 miles.
The surface area of the earth is therefore about 4_πr_2 = 183,346,494 miles2.
About 75% of the earth’s surface is covered by oceans; that’s about 137,509,871 miles2.
I don’t know the average depth of oceans, but the deepest part is about 6 miles deep, so let’s say that the average is 1½ miles. Then the volume of ocean water is about 206,264,806 miles3, or about 30,361,757,049,249,400,000 cubic feet, or about 52,465,116,181,103,000,000,000 cubic inches.
Assuming we include the peel on each banana, an average banana is roughly a cylinder 8 inches long and 1½ inches in diameter; its volume would then be about 8 × π(¾)2 = 14 cubic inches.
Therefore, the number of bananas needed to replace the ocean water is about 52,465,116,181,103,000,000,000 ÷ 14 = 3,711,147,813,383,610,000,000.
That’s about 65 times as many bananas as I got.
That’s absurd.
Volume of oceans:
k x 4pi*R^2*D where R is earth radius, D is average ocean depth, k = 3/4 is % of earth covered by oceans.
Volume of banana:
pi*r^2*L where r is banana radius and L banana length.
Number of bananas:
(3/4 * 4 * pi * R^2 * D) / (pi * r^2 * L) = 3 * (R/r)^2 * (D/L)
10^3 miles < R < 10^4 miles
1 inch < r < 10 inches
1 miles < D < 10 miles
1 inch < L < 10 inches
=>
min: 10^3 x (mile/inch)^3 ~ 10^17
max: 10^10 x (mile/inch)^3 ~ 10^24
Midpoint +/- factor of 10: 10^20 to 10^21
Who can resist those delicious 8 inches long banana on bagel with peanut butter
We’re going to need more banana trees.
I cheated and used https://en.wikipedia.org/wiki/Ocean
As to the volume of a banana, I assume we’re talking Cavendish (the main variety) not the miniature ones that you can get. This is where the disagreement is going to come. I’m taking the average banana to be 110 cm^3 or 1.10 x 10^(-13) km^3 as a km is 10^5 cm my answer 1.335 x 10^9 /( 1.10 x 10^(-13)) =1.2136 x 10^22 the original poster had 2.42 x 10^(23)
242,181,818,181,818,000,000,001 bananas, Bob.
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What I don’t get is why you guys guested at the volume of water in the ocean. Just google it.
1.35 billion cubic kilometers (or 320 million cubic miles for the freedom lovers out there). Btw, the average volume of a banana is 110 mL or cm^3.
Now, nerds, please provide me with the right answer.
thats exactly what I did - I had 300 million cubic miles not 320 but same thing.
btw - the volume of the ocean in milliliters is a pretty big number.
peanut butter jelly time dancing banana!
Gotta love everyone assuming bananas are a perfect cylinder. My answer: one giant, genetically engineered 1.35 billion cubic kilometer banana. Perfectly packed, of course.
well why dont you just google directly “how many bananas can fit in the worlds oceans” while you are at it mr party-pooper!
You really can google anything.