Question

Help Needed!

Answer 1

you can talk about the slopes of the lines on the edges

Answer 2

that should tell you information about the plane that is intersecting this cube

Answer 3

Good idea dan!

Answer 4

you can get the normal line of the plane, u can see the equation of the plane when
y=0, z=0 and x=0

Answer 5

Would it be a pentagon?

Answer 6

I see a pentagon.

Answer 7

yes it is

Answer 8

wait no

Answer 9

that's a good question

Answer 10

I know, right. Haha

Answer 11

ok it is a pentagon

Answer 12

Thank you. :)

Answer 13

yw!

Answer 14

Could you actually help me with another problem?

Answer 15

Go ahead @ayyookyndall

Answer 16

Ok, we know that \(V = \pi r^2 h\), right? So isolating \(h\) will get you \(h = \dfrac{V}{\pi r^2}\)

Now plug in values and solve.

Answer 17

282.7 / (3.14 * 5) = 18.006?

Answer 18

@geerky42

Answer 19

Wait, actually it would be 3.6...?

Answer 20

Don't forgot that radius is squarded

Answer 21

Yeah should be about 3.6

Answer 22

Can you help me with one more? Then I will make a new post.

Answer 23

sure

Answer 24

Okay, we would need to do some conversions.

How many yards are there in 15 ft? What about 3 in?

Answer 25

Remember yd = 3 ft = 36 in

Answer 26

5 yards is in 15 ft

Answer 27

Right. what about 3 in?

Answer 28

0.0833333

Answer 29

Yeah, it is equal to 1/12

So 15 feet by 15 feet by 3 inches is same as 5 yards by 5 yards by 1/12 yard.

Now find volume

Answer 30

How do I do that? Which volume formula?

Answer 31

Volume of rectangle prism is just length x width x height

Answer 32

So that's \(5\times5\times\dfrac{1}{12}\)

Answer 33

\[\frac{ 25 }{ 12 }\]

Answer 34

Yeah, 25/12 = 2.0833...

So we need 2.08333... yd^3 of concrete.

if the concrete costs $46.00 per cubic yard, how much 25/12 cubic yard of concretes cost?

Answer 35

At least $96?

Answer 36

somewhere like that, yeah

Answer 37

$95.83 tobe exact.

Answer 38

Okay, awesome. Can I tag you in my next post?

Answer 39

Well, I need to go soon, sorry. Try tag someone else.

Answer 40

Oh okay. Thats fine. :)