.

[pure stump]

i feel clueless

[jaunty garnet]

1. Wait patiently for a helper to come along.
2. Once someone helps you, say thank you and close the thread with:

+close

3. Feel free to nominate the person for helper of the week in #helper-nominations

[little tide]

Well, we have two straight parts of length l and two semicircles of diameter d. So:
L(total) = 2L(straight) + 2L(semicircle) = 2L(straight) + L(circle) = 2l + L(circle)
So, now recall how you can find the length of the circle if you know its diameter.

[pure stump]

23.87?

[little tide]

Well, obviously not. That's shorter than one straight segment, how did you get that?

[pure stump]

75 over pi

i dunno i forgot

how i can find the length of a cirlce

[little tide]

The length of a circle with diameter d is πd. So:
L(total) = 2l + πd

[pure stump]

235.5

im trying my best to understand some terms bc i forget some variables play a part and some don't.. and it's a bit confusing trying to calculate it

[little tide]

Hm, no.
We have l = 100 m and d = 75 m. Sustitute those into the formula that we got.

[pure stump]

so 2(100) + π(75)?

[little tide]

Yes.

Don't forget about units, though.

[pure stump]

435.5

[pure stump]

units as in?

pi being 3.14?

[little tide]

No, I mean meters.

[little tide]

Rather, 435.6 m.

Also, why take π as 3.14?

Oh, wait. They asked to.

Hm... I see no reason, but oh well.

[pure stump]

yh that's what was confusing me

thank u for the explanation <3

i got it now

[little tide]

Great! You're welcome 😁

[pure stump]

+close