Question

http://prntscr.com/b6fsd9

Answer 1

@openstudier013087

Answer 2

so first you need converting these unit measure from feet and inches on yard

Answer 3

Hi @Kikuo
Can you first compute the volume of the desired slab in cubic inches (in^3)

Answer 4

I'm not sure how

@math&ing001

Answer 5

First convert the dimentions to inches
11 ft = .... in.
then multiply volume = height * width * lenght

Answer 6

no - its easier to convert to inches as math suggested

Answer 7

@welshfella

Ah, how do we do so?

Answer 8

11 feet = 11 * 12 = 132 inches

so volume of slab in cubic ins is 132*132*3

1 cu yd = 36^3 cu inches

so cost of slab = 132*132*3
--------- * 63
36^3

Answer 9

I understand the 11 feet=132 inches

But I'm not sure what you're doing after that
@openstudier013087

Answer 10

@latinC

Answer 11

I don't understand the 1 cu yd=36&3 cu inches and how you calculated the cost of the slab

Answer 12

There are 36 inches in a yard and they want cubic inches which is why they cubed it

Answer 13

Hm, still a bit confused.

Answer 14

So you have to convert all the measurements into inches

Answer 15

11 feet into inches is 11x12=132

Answer 16

Alright. That part makes sense.

Continue : )

Answer 17

So there are 36 inches in a yard and it costs $63 per CUBIC yard

Answer 18

Since it says cubic yard you need to cube 36 to convert it

Answer 19

Ah I get it. Alright, how do we convert?

Answer 20

And they divide the two numbers because they want to see how many time the concrete reaches 1 cubic yard

Answer 21

36^3 is the conversion for 1 cubic yard

Answer 22

into inches

Answer 23

And they divide the two numbers because they want to see how many time the concrete reaches 1 cubic yard

I didn't understand this part.

I understood what you said about the cubic yard.

Answer 24

Okay, let's think of it this way. So the unit cubic yard is used for volume. And the 1 cubic yard is 36 cubic inches. We can also think of a cube with 36 cubic inches for each side and the volume of that would be 36^3

Answer 25

The reason they divided that and then multiplied $63 was like you would in this situation: 2 apples cost $2 but you want to buy 5 apples. You would then do 5/2 and then multiply by $2 and would get $5

Answer 26

Does that make a little more sense?

Answer 27

Almost. Just need to understand the division and multiply by 63 part.

Answer 28

Okay, so 132x132x3=52272 and 36^3 is 46656, so that means the volume of the concrete that they need is 52272 cubic inches and it costs $63 to buy one slab of concrete that has 46656 cubic inches

Answer 29

So you divide 52272 by 46656 and multiply by 63 in order to find the total amount of money it costs to buy the concrete they need

Answer 30

I believe I understand. Mind helping me with some more questions?