Question

Circle A has a diameter of 9 inches, a circumference of 28.26 inches, and an area of 63.585 square inches. The diameter of circle B is 5 inches, the circumference is 15.70 inches, and the area is 19.625 square inches..

Part A: Using the formula for circumference, solve for the value of pi for each circle. (4 points)

Part B: Use the formula for area and solve for the value of pi for each circle. (4 points)

Part C: What observation can you make about the value of pi for circles A and B? (2 points)

Answer 1

@Eboogie4 @Error1603

Answer 2

@suppa_lova

Answer 3

@-SpencerBraz-
@Qwertty123

Answer 4

ok so what are the formulas that you need to use
please write them out bc it has been a while

Answer 5

1st wat u want to do is Divide 28.26 with 9 and u will get PI which is 3.14

Answer 6

C=2πr

Answer 7

3.14159265
to be exact

Answer 8

no its 3.14 suppa_lova so @Error1603 whats next

Answer 9

2nd you want to Divide 15.70 by 5 and also you will get PI which is 3.14 again

Answer 10

3rd divide 63.585 by 20.25 and again you will get PI which is 3.14

Answer 11

Got it?

Answer 12

yep

Answer 13

now what

Answer 14

Oh, we just solved it. You just simply put it all together, like this: A = 3.14 B = 3.14 C =The person working these calculations for circles A and B is using the same consistent value for pi or 3.14

Answer 15

so whats the circumference

Answer 16

oh k

Answer 17

stay i have another one

Answer 18

Okay

Answer 19

hold on i coping the stuff just had to take care of my bird

Answer 20

Alright

Answer 21

Sorry got to go

Answer 22

@xMissAlyCatx

Answer 23

A candy bar box is in the shape of a triangular prism. The volume of the box is 3,240 cubic centimeters.

A triangular prism is shown with base of triangle labeled 24 cm, sides of the triangle labeled 15 cm, and length of the box equal to 30 cm.

Part A: What is the height of the box? Show your work. (5 points)

Part B: What is the approximate amount of cardboard used to make this candy box? Explain how you got your answer. (5 points)

Answer 24

can u help me @xMissAlyCatx

Answer 25

Yes. Hello there :)

Answer 26

hello

Answer 27

Okay, so do you know the formula for the volume of a triangular prism?

Answer 28

google says V=1
4h﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4

Answer 29

V≈4949.18

Answer 30

thats what google said when i put the # in

Answer 31

The volume for a triangular prism is:

\[V=\frac{ 1 }{ 2 }*b*h*l\]

Answer 32

when i wnet to google it said differently but ok

Answer 33

so whats the answer i always get this stuff wrong

Answer 34

That's the formula, I promise. Okay anyways..

What you want to do is plug in the numbers that it gave to you on the picture and in the beginning into to formula..

Answer 35

Do that for me please.

Answer 36

what i dont under stand

Answer 37

Okay, the numbers that you were given on your picture.. plug them into that formula I just gave you..

Answer 38

i dont know how to plug them in the formula

Answer 39

\[3240=\frac{ 1 }{ 2}*30*24*h\]

Answer 40

So multiply the 1/2 the 30 and the 24..

Answer 41

360 I DONT KNOW i dont know how to but a 1/2 * 30* 24 in the calculator

Answer 42

Just do 30 x 24 x .5

Answer 43

.5 is the same as 1/2

Answer 44

so 360 like i said

Answer 45

Yes.

Answer 46

so now what

Answer 47

Okay so now you've got:

3240 = 360 h

So you need to divide 360 from both sides so that "h" is by itself.

Answer 48

so .5 bc if u divide 360/30/24=.5

Answer 49

.5 is what 1/2 is.. that's where you get .5 from.

Answer 50

What is 3240/360?

Answer 51

9

Answer 52

That's your answer.
h=9

Answer 53

so what B

Answer 54

Are you familiar with finding surface area of each part of the prism?

Answer 55

i think so @xMissAlyCatx

Answer 56

Okay. So find the surface area of one of the bases, and one of the faces..

Answer 57

A≈1415.89
a Base side

24
b Base side

30
c Base side

30
h Height

9

Answer 58

i dont know help me plz @xMissAlyCatx

Answer 59

Okay, let's just look at the triangle base first..

We have the Area for a triangle which is A = 1/2 times b times (h)

Answer 60

So A = 1/2 (24) (9)

Answer 61

so .5*9*24=108

Answer 62

Yes.

Answer 63

Okay, now multiply that by 2 because you have 2 of the bases in total.

Answer 64

so the answer for question B is108

Answer 65

No. We aren't done yet.

Answer 66

You need the surface area of the 3 faces as well.

Answer 67

30 (15) + __?__

Answer 68

=** not + sorry

Answer 69

108*2=216

Answer 70

Yes for that part. Now do the 30 (15) = ?

Answer 71

30*15=450

Answer 72

Okay good. Now multiply that by 3.

Answer 73

450*3=1350

Answer 74

Okay, now add 1350 and 216..

Answer 75

so 1566

Answer 76

Yes. It would be 1566 cm squared.