Question

will fan and medal


What is the approximate perimeter of the figure?



A.
18.8 cm

B.
10.71 cm

C.
7.7 cm

D.
4.71 cm
https://static.k12.com/calms_media/media/1419000_1419500/1419363/1/cd4644381e9b33557ea6bb729d530654c755025f/MS_PA_130922_171134.jpg

Answer 1

Well, the arc would be 1/4 of the full circumference of a circle with a radius of 3cm.

Answer 2

so i need to time 1/4 by 3

Answer 3

If you had a (full) circle with the radius of 3cm
What would be it's circumference?

Answer 4

its **

Answer 5

Ok,

circumference = π • diameter

correct?

Answer 6

By "so i need to time 1/4 by 3" you mean, "Should I multiply (1/4) by 3?"

No. Find the area of a full circle of radius 3, and then multiply that area by (1/4).

Answer 7

ok

Answer 8

circumference, not area, mathmale.

Answer 9

the query is permiter

Answer 10

18.84

Answer 11

Right. Thanks for pointing that out!
But: perimeter, not permiter. ;)

Answer 12

Yes, I know, I am lagging:)

Answer 13

i hate lagg

Answer 14

Yes, so if the full circumference is 18.84, then 1/4 of that is?

Answer 15

(you need 1/4 of the circumference, because that arc in your shape, is exactly the quarter of thecircumference of a circle with radius 3)

Answer 16

4.71

Answer 17

Good. So that arc is 4.71

Answer 18

And then you have other two sides 3cm long, so your perimeter is?