Question

Please help with 4 questions
ASAP medal+fan

Answer 1

2-5

Answer 2

@mathmate @mathmale

Answer 3

2-5

Answer 4

Please help

Answer 5

@pooja195

Answer 6

@mathmate @mathwiz916 @mathmale @mathwizzard3 @MathematicalyExactOne

Answer 7

@mathmale

Answer 8

Can you please help

Answer 9

2-5 on this attachment

Answer 10

please help for fan and medal

Answer 11

someone help!

Answer 12

i am so confused i have been working for 3 hours and got 1 problem done

Answer 13

ok, I think I know how to do this.
Can you tell me what the area of a circle is? and the circumference of a circle is?

Answer 14

a=pi times r

Answer 15

c=2pi times r

Answer 16

you forgot the squared for area.
A=pi(r)^2

Answer 17

for the first problem, you want to set the given circumference to the equation, 2pi(r)
352=2pi(r)

Answer 18

oh yeah

Answer 19

i got 9859

Answer 20

but for 2-5 i didn't get

Answer 21

It's basically the same set up.
For 2, 3 1/7 = pi(r)^2, solve for r, and plug it into the C=2pi(r)

Answer 22

what did you get

Answer 23

i got C=1.0272

Answer 24

Same

Answer 25

Let's do number 3

Answer 26

wait what did you get for number 1 i got 9859

Answer 27

is that what you got?

Answer 28

i got 9856

Answer 29

that's what i got the first time

Answer 30

that's due to rounding probably, i used 22/7 for pi

Answer 31

what did you get for number 3

Answer 32

did you already solve for it?

Answer 33

not yet i'm about to

Answer 34

i got my answer, tell me yours first

Answer 35

i don't get this one

Answer 36

i got something really off so i don't really want to say it

Answer 37

how do i solve this

Answer 38

the set up is exactly the same as question 2
15,400=2pi(r), solve for r and plug into C=2pi(r)

Answer 39

how do you solve for r

Answer 40

oops, that should be pi(r^2), because it's squared, you need to take the square root of it
so \[\sqrt{15,400/22/7}\]

Answer 41

i don't get this

Answer 42

first solve for 15,400/2pi, what do you get? use 22/7 for pi

Answer 43

i keep messing up, sorry, 15,400/pi

Answer 44

i got this

Answer 45

that's because you divided it the other way around
divide 15,400 by 22/7
15,400/(22/7)

Answer 46

100

Answer 47

plug what i have typed exactly, with the parenthesis

Answer 48

4900

Answer 49

good, now you need to square root it

Answer 50

24010000

Answer 51

that's squaring it
square root is \[\sqrt{4900}\]

Answer 52

how do you square root it

Answer 53

do you have a calculator?

Answer 54

yes

Answer 55

is it Texas Instruments TI-30X?

Answer 56

yes

Answer 57

so hit the 2nd button on it, its in light blue, and then the square root symbol, which is under the ^ symbol

Answer 58

then what

Answer 59

plug in 4900 into the square root

Answer 60

did you get it?

Answer 61

1.001735585

Answer 62

for the square root of 4900?

Answer 63

yes

Answer 64

no 70

Answer 65

70

Answer 66

ok good, now plug in 70 into C=2pi(r)
r is 70

Answer 67

i got 440

Answer 68

yay! correct

Answer 69

do you understand how to solve the rest now?

Answer 70

finally

Answer 71

not really

Answer 72

but i'll try

Answer 73

do you still need my help?

Answer 74

probably sorry

Answer 75

it's fine, can you try 4, you got the correct answer on this on 1, so it's the same setup

Answer 76

can you tell me the steps one more time

Answer 77

you are given the circumference, 12(4/7),
12(4/7)=2pi(r), solve for r and plug in the value of r into A=pi(r)^2

Answer 78

tell me what you get for r first

Answer 79

bro i know this sounds wrong but can you please give me the answers i have to go to bed

Answer 80

im sorry i cant do that, it's really not that hard

Answer 81

ill give you some help