Circles in square

[flint ravine]

Ik u have to do use some sort of formula with the diameters of the circles corresponding to length but i cant come up with it

[prime ledge]

alright lemme try this

so what we're going to try

is to form an equation using the radius of the circles

[flint ravine]

thanks

[prime ledge]

so we got this so far

16x^2 + 4pix^2 = 40

divide all sides by 4

this is calc im guessing so ima use my calc for the pi bit

so simplifying to get a simpler equation

divide both sides by 0.858

so now we have x = 3.413

and remember one side of the square = 4x

so for the perimeter

4 x 4x = 16x

16 x 3.413

= 54.6 cm

@flint ravine

this right?

[flint ravine]

why did u change pi here?

[prime ledge]

pi = 3.14159...

[flint ravine]

yh its right

[prime ledge]

and since its calc

[flint ravine]

but why would u?

[prime ledge]

i might as well just use the acc number

[prime ledge]

i mean lemme show

[flint ravine]

oh so ur basically just putting in ur calc 4-pi

[prime ledge]

yep

[prime ledge]

and this just circles back to where u started

pi is a constant so u can just change back to an acc number

[flint ravine]

thanks a lot im just going through it atm

[prime ledge]

nw

[flint ravine]

yh i get it now thanks

[prime ledge]

with these type of questions, its best to make one of the things u know as a variable like x and identify everything else as a form of that variable

so you can solve an equation

js thinking algebraically

[flint ravine]

by form u just mean like a multiple or something

/however they may be related

[visual mauve]

blur any answers pls

[flint ravine]

?

[prime ledge]

yeah a multiple

like how i did x, 4x, pix^2

[limber trench]

i would simplied but your way still works

[prime ledge]

damn how did i not see that

[prime ledge]

@flint ravine forgot you could also factorise