Question

math help
A mirror frame in the shape of an oval is shown below. The ends of the frame form semicircles:

Which of the following is the perimeter of the inner edge of the frame?

(π = 3.14)

192.78 inches
246.78 inches
277.56 inches
331.56 inches

Answer 1

@dude

Answer 2

Okay we can start with the semi circles

Do you know the perimeter of a circle equation? (Also known as circumference)

Answer 3

Okay this should be given to you as an equation but you should have
C= 2\(\pi\)r

r is the radius

Do you know the radius of the circle?

Answer 4

uh I dont thinks so ._.

Answer 5

Radius is half the length across the circle

(Not sure if you could see this or not but the top and bottom of the shape are semi-circles, you also know the distance across)

To find the radius here, divide the length given by 2 (They gave you the diameter) (If my wording is new/confusing to you feel free to tell me and I will change my explanation)

Answer 6

soooo its 13.5?

Answer 7

Yep, so now plug it back in for r

C=2\(\pi\)r

Answer 8

C=2π13.5 oki so uh what else is there?

Answer 9

Well solve it (Multiply it by plugging into le calculator)

Answer 10

uh I dont think I have an le calculator ._.

Answer 11

Use a calculator

Answer 12

unless you dont have access to one

Answer 13

dunt worry I asked Siri XD it's 27?

Answer 14

D: No

\(2\times 3.14\times 13.5\) should be 84.78

Answer 15

oh forgot to also multiply 3.14 as well ._.

Answer 16

Oh haha rip
Okay
We are missing the red part of the shape, because we know the length, we just add it to 84.78

Answer 17

so just add 54 by 84.78 right?

Answer 18

54 two times

Because there are 2 sides

Answer 19

o .-. its 108 XD

Answer 20

Ye
108+84.78

Answer 21

192.78 its a!

Answer 22

Ya

Answer 23

so uh I got another question im kinda stuck on :T you wanna help me out on it or nah?

Answer 24

Sure make a new post

Answer 25

alright