#circles
quaint wave
tardy folio
Alright so we know the formula of the perimeter of a circle: perimeter = 2πr
In this case it’s given that he walks 2517 m in total and does that exactly 15 times so the perimeter should be 2517 / 15 = 167.8 m.
167.8 = 2πr
r = 167.8 / 2π = 263.5796…
d = 2r = 2 • 263.5796… ≈ 527.2 m
severe cliff
Let L be the total distance, N be the number of times walked around the pond and d be the diameter of the pond.
L = N*l(circle) = πNd
d = L/(πN) = 2517 m/(π*15) = 839/(5π) m ≈ 53.4 m.
severe cliff
Alright so we know the formula of the perimeter of a circle: perimeter = 2πr
In ...
Um, r since to be very wrong. Surely the radius can't be bigger than the circumference 😄
severe cliff
I think you forgot to put brackets aroind the denominator, hence when you put it into a calculator, you multiplied by π instead of dividing by it.
severe cliff
ive never done
That's why it's better to solve generally.
severe cliff
Damn it’s my calculator indeed
The calculator is fine, you just forgot to put brackets.
quaint wave
That's why it's better to solve generally.
yeah im gonna try but like ive never been taught this
so idk why its homeowkr
severe cliff
I wonder why people aren't taught to solve problems generally...
Surely it's obvious why just substituting number immediately is a bad idea.
tardy folio
The calculator is fine, you just forgot to put brackets.
Not necessarily though when I use my graphing calculator it gives me the correct answer
severe cliff
Not necessarily though when I use my graphing calculator it gives me the correct...
Well, still better to put brackets if the denominator contains more than a single term.
severe cliff
Well, just put it into a calculator.
severe cliff
Don't forget that you have cos(12°), not just cos(12).
Um...
Well, typing something into a calculator kinda takes 5 seconds, but alright...
quaint wave
nah
severe cliff
Like, literally 5 seconds.
https://www.wolframalpha.com/input?i=2.6cos(12+deg)
