Question

-WILL MEDAL AND FAN-

Answer 1

http://prntscr.com/6zcrr9

Answer 2

http://prntscr.com/6zcrtx

Answer 3

http://prntscr.com/6zcrwl

Answer 4

@adajiamcneal ? :/

Answer 5

I can help

Answer 6

Awesome.

Answer 7

So for number 1 is we need to find the volume of a triangular prism and the equation for that is V=1/2 length x width x height

Answer 8

.5 x 29 x 10 x 10?

Answer 9

1,450

Answer 10

No hold on I had the wrong equation

Answer 11

The right equation is V=1/4 square root a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4
= 1/4·29 square root 104+2·(10·10)2+2·(10·10)2﹣104+2·(10·10)2﹣104≈1255.73684

Answer 12

Oh ok.

Answer 13

So the answer is b

Answer 14

Got it.

Answer 15

Hold on Ill be right back

Answer 16

Had to grab a drink of water

Answer 17

Alright so for number two we are trying using cubic feet and cubic yards as measurements.

Answer 18

A yard is 3 feet, when something is cubed it is ^3. 3 x 3 is 9. 9= 1 cubic yard

Answer 19

there are three cubic yards, or 9 x 3. That equals 27

Answer 20

27 = 1 cubic yard

Answer 21

Not 3 cubic yards... its been a while since I've done volume stuff

Answer 22

The volume of a rectangular prism is L x w x h so it is 11 feet x 11 feet x 3 inches

Answer 23

11 feet is 11/3 yards 3 inches is 3/36=1/12 yards. You put this all together (11/3)*(11/3)*(1/12)=121/108 cubic yards. Since the cubic yard costs 63$, the price of the concrete will be (121/108)*63=70.58$

Answer 24

I know thats all really confusing but the answer is again b

Answer 25

I know we've only gone through two but whatever. I really appreciate the help!
Shall we continue?

Answer 26

Yeah

Answer 27

Alright so for three we are trying to find the radius of a cylinder using the volume

Answer 28

The equation for the volume of a cylinder is V = h * pi * r^2. We don't know the radius yet but we know the height. So we want to substitute in the values we do know

Answer 29

980 = 10 x 3.14 x r^2

Answer 30

980pi*

Answer 31

No we want to simplify so that we can find r^2

Answer 32

So we need to divide both sides by 10 and by 3.14 (pi).
No we have 98 = r^2

Answer 33

One more step is to unsure the equation so that we get r alone

Answer 34

Now we have r = 7 in

Answer 35

Answer = A

Answer 36

I accidentally used the wrong height. The answer for the equation we did should be 9.899 but just substitute in 20 for the height value and you have the correct answer

Answer 37

Are you still following me? or am I making no sense?

Answer 38

You're making sense, it's just me, I'm not great at following in these particular volume-type-questions

Answer 39

Understandable. My rough spot is algebra

Answer 40

For the next problem we are doing the opposite.Trying to solve for the volume, using the radius

Answer 41

No the answer is 7

Answer 42

For the next problem, we need to do the opposite and find the volume with the radius and height

Answer 43

V = B • h
So we first need to find the area of the base

Answer 44

It's 3.14 x r^2 right?

Answer 45

yes that is

Answer 46

28.26

Answer 47

Yes thats right

Answer 48

So now we can fill in the equation V = B • h
Now we have V = 28.26 • 6

Answer 49

169.56

Answer 50

/ 3.14 = 54

Answer 51

Is that right?

Answer 52

Yes

Answer 53

Now for the last problem. Probably the most confusing of them all

Answer 54

So we have a rectangular prism as well as half of a cylinder

Answer 55

I say rectangular prism first? If it's V = B x L x H, I think it's 9 x 11 x 6

Answer 56

That's 594, so it rules out option A.

Answer 57

Thats right

Answer 58

And right again

Answer 59

So we need to find the ungiven measurements of the half cylinder

Answer 60

What if we were to cut the top shape in half and just solve as a cylinder? That would work, right?

Answer 61

Well we could do that but for the sake of the problem it will be easier to solve it as a half cylinder

Answer 62

We need to find the height which corresponds with the length of the rectangle

Answer 63

The answer is 11

Answer 64

Now we need to find the base of the cylinder and half it the diameter of the circle is 9

Answer 65

Are you still here?

Answer 66

The answer to the last question is 705. GTG good luck

Answer 67

Ok, I got 4/5
here are the right answers

1. B. 1,255.7 yd^3
2. B. $70.58
3. A. 7 in
4. C. 54 (pi) in.^3
5. D. 944 mm^3