Question

the radius of a pizza is 20 cm, what is the central angle in degrees that gives one person 30 cm of crust?

Answer 1

You should use this:
\[s=\theta r\]
How?

Answer 2

i dont know how?

Answer 3

r is the radius,
theta the angle,
s the length of the crust.
How can we use that?

Answer 4

i did thatt way but i couldnt get the answer

Answer 5

use this formula instead

minor arc = (central angle / 360) (circumference)

the minor arc is the 30cm = (central angle/ 360) (circumference of the pizza)

Answer 6

do u get it so far?

Answer 7

no i didnt

Answer 8

do u still need help?

Answer 9

yes

Answer 10

i have four answers but i dont know which is corect/

Answer 11

may i know your answer

Answer 12

ok do u at least get the equation

Answer 13

no its confucing

Answer 14

I got this: \[\theta = \frac{30}{20}\]
\[\theta=\frac{3}{2}\] theta in radians

Answer 15

yes i got taht

Answer 16

And that's wrong?

Answer 17

Maybe we have to write it in degrees:
2/3 rad=38.2 °

Answer 18

a.120 b. 3 c. 4 d. 86 these are the four answers that i have to choose from

Answer 19

120 b. 35 c. 43 d. 86

Answer 20

i know the answer if u want it

Answer 21

yes can i have please

Answer 22

it is 86 so d

Answer 23

are you sure. because this is my last online class test.

Answer 24

yes i am sure

Answer 25

thank you :)

Answer 26

ur welcome sorry to make u wait all this long.. :))