Question

circle P , arc XYZ is a semicircle and mXZ=47. what is arc YZ

Answer 1

@FutureMathProfessor PLEASEEEEEEEE HELP

Answer 2

what's 180 - 47.

Answer 3

133

Answer 4

that's the answer?

Answer 5

Yup

Answer 6

oh....cool :) thanks

Answer 7

im mad I spent forever trying to find something so simple

Answer 8

lolz :)

Answer 9

ok hold on I have another please
what is the surface area of a sphere with the circumference 24

Answer 10

@FutureMathProfessor

Answer 11

Use the surface area formula.

Answer 12

whats the form...I don't have it

Answer 13

i have the formula but im not coming ouy with the right answer... @FutureMathProfessor

Answer 14

What's the formula

Answer 15

@GoldPhenoix please help me

Answer 16

With?

Answer 17

the formula is 4 pie r squared

Answer 18

equation above... @GoldPhenoix

Answer 19

Formula for what?

Answer 20

First off find R

Answer 21

Surface area of a sphere?

Answer 22

Then plug it in for R in your surface area equation

Answer 23

surface area of a sphere have the formula but im workin it out and not getting the right answer

Answer 24

That is the formula.

Answer 25

i don't get it it doesn't give me the radius just the circumfrence

Answer 26

That's why you gotta find the radius

Answer 27

the formula is 4 pie radius squared

Answer 28

You can find the radius by using the circumference. You have to work backward. Radius --> Diameter (2r) --> Circumference (2r x pi)

Answer 29

Circumfrence of a circle: 2r*pi = C
You have C, so solve for r.

Answer 30

no..r is just the radius

Answer 31

Great so find r

Answer 32

Then plug R into the equation for the surface area of a sphere

Answer 33

We want to find the surface area of the sphere. If we have the circumference (24), then we must change the circumference into the radius. How? By going backward. So 24 divided by pi is 7.64. The diameter is 7.64. If you divide the diameter by 2, the radius would be 3.82.
R = 3.82.
Now just plug it in the formula, and that should be your answer.
I hope this help. :)

Answer 34

its wrong well not the radius but when you do the problem its wrong @GoldPhenoix

Answer 35

helpp

Answer 36

@GoldPhenoix how do I find the surface area of a sphere though

Answer 37

you use the formula 4 pi r squared.

Answer 38

i did

Answer 39

not getting the right answer..can u try it and see what u get

Answer 40

183.37 unit^2.

Answer 41

ok thanks :) are you still on i need more help!!!