panjang diagonal suatu persegi sqrt3(2, keliling dari persegi tersebut adalah

Using Pythagoras' Theorum

$$x^2+x^2=\left(\frac{\sqrt3}{2}\right)^2\\\\
2x^2=\frac{3}{4}\\\\
x^2=\frac{3}{8}\\\\
x=\sqrt{\frac{3}{8}}\\\\
x=\frac{\sqrt3 }{2\sqrt2 }\\\\
x=\frac{\sqrt3 }{2\sqrt2 }\times \frac{\sqrt2}{\sqrt2}\\\\
x=\frac{\sqrt3 \sqrt2 }{2\sqrt2 \sqrt2}\\\\
x=\frac{\sqrt6 }{4}\\\\
Perimeter=4\times \frac{\sqrt6 }{4}=\sqrt6\:\: units\\\\$$

Google translation from Indonesian gives: length of the diagonal of a square sqrt3 (2), the circumference of the square is

If this is meant to say the diagonal is (√3)/2 then, if the side of the square is x, from Pythagoras we have 

√(2x²) = (√3)/2 

(√2)x = (√3)/2

x = (√3)/(2*√2) = √2*√3/4 = √6/4

So circumference (better to use perimeter for a square I suppose!) = 4x = √6

Google translated this as:

length of the diagonal of a square sqrt3 (2, perimeter of the square is

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I'll take a try here, even though I don't exactly know what's being asked....we have

s^2 + s^2 = [√(3)/2]^2

2s^2 = 3/4       divide both sides by 2

s^2 = 3/8         take the square root of both sides

s = √(3)/√(8) = √(3)/[2√(2)] 

And multiplying by 4, we have

[4√(3)/[2√(2)] = 2√(3)/√(2)  =  [√2√2√(3)]/√(2) = √2√(3) = √6

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Aku akan mengambil mencoba di sini, meskipun saya tidak tahu persis apa yang diminta .... kita memiliki

s ^ 2 + s ^ 2 = [√ (3) / 2] ^ 2

2s ^ 2 = 3/4 membagi kedua sisi dengan 2

s ^ 2 = 3/8 mengambil akar kuadrat dari kedua belah pihak

s = √ (3) / √ (8) = √ (3) / [2 √ (2)]

Dan mengalikan dengan 4, kita harus

[4 √ (3) / [2 √ (2)] = 2 √ (3) / √ (2) = [√ 2 √ 2 √ (3)] / √ (2) = √ 2 √ (3) = √ 6

Did you use Desmos for that pic, Melody???

uall are like speaking spanish or sumthing i cant understand uall.

It's Indonesian, Kool-Aid....don't worry.....we only understand the part that Google translates !!!

o ok i thought i was missing out on somekind of code or sumting..

No Chris I always use GeoGebra for pictures like this.

It is a free download - well worth it.

It is quite powerful but i don't know how to use it very well.  It is not terrible intuitive but with a bit of mucking around you can draw things like this fairly quickly.

You should download it and have a play.

I already use it.......I don't find it as intuitive as Desmos, though.....but I suppose it does do some things better

It does completely different things from Desmos.  But you are right it is not very intuitive.  still just start with little things and it will become easier.