how do I do this plz help

[wispy harness]

[royal grail]

help

[gaunt jewel]

It is an equilateral triangle

That means all the angles are the same

[royal grail]

Yeah

I got that part

[gaunt jewel]

The sum of the angles of a triangle is 180, and if it has 3 angles, then each angle is 180/3 degreess

[royal grail]

I’m stuck on the tiny little things

The yellow ones

[gaunt jewel]

So it is neither 45 90 45 nor 30 60 90

Ok so

[cedar crag]

what are the radii of the circles

[gaunt jewel]

That is what you have to know, yes

[royal grail]

It’s not even a circle

It’s like a 2D cone

[cedar crag]

the red things really look like circles to me

[gaunt jewel]

It is a circle

[cedar crag]

but yeah it doesnt actually say they are circles

[royal grail]

They have points

[cedar crag]

so technically they may not be

[royal grail]

They aren’t

[cedar crag]

you can assume they are

[gaunt jewel]

Technically this question isn't well defined smh

[cedar crag]

S. M. H.

[gaunt jewel]

We assume some symmetrical axes and then we can solve it

So it is the portion of a circle

Like the slice of a pizza

You need to find the area of it

[royal grail]

Yeah

[cedar crag]

so do you have the area of each red shape

[royal grail]

We need to find the area of a sector

[gaunt jewel]

So calculate the area of the whole circle

[royal grail]

no

We need to find that

[gaunt jewel]

Let's calculate it then

You need the radius

What is the radius

[royal grail]

6?

No

3

[gaunt jewel]

No

Why 3 and not 6

[royal grail]

Here’s the pic

[royal grail]

6 is diameter of the red cones

[gaunt jewel]

No, imagine the whole circle drawn

[royal grail]

but we only have 3/4s of the circle

[royal grail]

Ohhh

So it is 6

[gaunt jewel]

Yes!

So what would the area of that whole red area be

[royal grail]

36 pi

[gaunt jewel]

Yes!

But we don't have the whole circle

How much of that circle do we have?

[royal grail]

3/4

[gaunt jewel]

No

[royal grail]

huh

[gaunt jewel]

How do you get 3/4

[royal grail]

1/2?

[royal grail]

Idk

[gaunt jewel]

Are you talking about the 3 red areas combined or just one?

[royal grail]

All 3

[gaunt jewel]

Ok let's think then

A circle has 360°

And there we have 3 sections that cover 60° each

So we are covering 180°

180/360 = 1/2, as you said

So the area of the 3 sections is half the area of the circle

How much is that

[royal grail]

Uh

18pi

[gaunt jewel]

Yes!

Ok

Now we just need the area of the triangle

And we will get the area of the middle thing

You see how, right?

The area of the yellow region is the area of the triangle minus the area of the red region

[royal grail]

I see

Wait

But this is how they solved it

[gaunt jewel]

They are doing the same as us

[royal grail]

we got the same answer, right?

[gaunt jewel]

Not yet, you still need the last step

[gaunt jewel]

Didn't you read this?

I have to go, someone else can help you finish that part if you don't know how to do it

[royal grail]

sorry I was getting ready for my final

[royal grail]

Alr

Ty for helping me

[royal grail]

wait how do we know it covers 60

[cedar crag]

because the triangles have angles of 60°

because equilateral

[royal grail]

oh

So sqrt108 - 18pi

Equals the center

[cedar crag]

sqrt(108) is not right

[royal grail]

How did they get the area of the big triangle

[royal grail]

huh

[cedar crag]

do you remember the formula from before

area = s^2*sqrt(3)/4

[royal grail]

Yeah

I js remembered

[cedar crag]

12^2*sqrt(3)/4 = 144*sqrt(3)/4 = 36sqrt(3)

[royal grail]

Oh