A Pizza with the radius z and the height a has the volume V= Pi×z×z×a
For each piece of pineapple where nea is height of a cone, p is radius of a cone and le equals 1/3, volume is Pi * nea * p * p * le.
You understand now why people don’t like pineaaples on their pizzas?
That must be from a Christian homeschooling textbook
And the Lord spake, saying, '‘First shalt thou take out the Holy Pin. Then shalt thou count to three, no more, no less. Three shall be the number thou shalt count, and the number of the counting shall be three. Four shalt thou not count, neither count thou two, excepting that thou then proceed to three. Five is right out. Once the number three, being the third number, be reached, then lobbest thou thy Holy Hand Grenade of Antioch towards thy foe, who, being naughty in My sight, shall snuff it.’
It’s to make the numbers simple because they aren’t important, the methodology is
I get that, it’s like rounding gravitational acceleration (on earth) to 10…
But why don’t they just use 3, preceded by a “pi is a little more than 3, but for now we’ll round down to 3.”
Especially given that using π=3 is accurate enough for most daily use by ordinary people for ordinary things.
3 or 5 is equally inaccurate. Engineers usually round it up from however accurate they need it. Scientists usually try to use it to as many digits of significance as they can.
3 or 5 is equally inaccurate, it doesn’t matter which you use if you think that’s accurate. Most people, engineers and scientists and mathematicians, use computers, but you’ll find they can get inaccurate pretty quickly too.
Again, 3 or 5 is a meaningless distinction to round an irrational number to. 3 is not an accurate value of pi in any sense and neither even is 3.14.
Sure, until you actually need the correct result of the circumference of a circle and think pi is 5.
Misinformation is education. Welcome to the future.
It’s fucking pi. It’s a constant that will never change in their entire lives, just teach reality the first time instead of making up a thousand little lies to correct later.
The dumbest kids in class can’t handle algebra.
It’s a really bad question for all sorts of reasons. Firstly because they defining π as 5 (it’s not even close to the real value) and they never explain what h is.
Also you should probably just use letters everywhere at this point and not use π unless π equals π.
So? You think you’ll get the correct result by using 3? Or 3.14? Not quite. You can only get infinitesimally close to the correct result by increasing digits of pi.
And of course, if you really need that circumference for something critical, guess what? You use the things people developed for this very problem, software packages, and so on. And of course, you get it double checked, triple checked.
If it’s assume pi is 5, it’s not misinformation. If they point guns at kids and say it’s 5 for real, then yes.
Or you could just use 3.14 which is infinitesimally more correct than 5, not lie about the number and aim for correctness and accuracy so people learn how to do things right the first time.
If you can’t handle a few decimal points then you aren’t ready for pi, go back to third grade.
“One! Two! Five!” “Three sire!” “Three!”
It’s an engineer’s pi.
