Question

pleeeaase help! question posted in comments

Answer 1

It looks correct to me.

Answer 2

i'm asking how to solve it.

Answer 3

It's all done there for you to see.

Answer 4

I can explain each area.

Answer 5

do i solve for the volume of the cylinder first?

Answer 6

What cylinder?
You posted a fully solved problem about the surface area of a triangular prism.
There is no cylinder.

Answer 7

oops! i must have posted the wrong question.

Answer 8

ok

Answer 9

Try again. I'll try to help.

Answer 10

fixed it

Answer 11

Ok.
First we need to find the volume of the tank.

\(\Large V_{cylinder} = \pi r^2 h\)

Answer 12

i got 11

Answer 13

11.3619 to be exact

Answer 14

You have the height and diameter of the cylindrical tank.
You need the height and radius for the formula.
If the diameter of the base is 2.2 ft, what is the radius of the base?

Answer 15

That is the volume?

Answer 16

yes, that's what i got for the volume.

Answer 17

okay, so 11

Answer 18

I get exactly 11.3982 ft^3

Answer 19

Now you are told that the tank fills at a rate of 2.5 ft^3 per minute.
Divide the volume by the rate to get the number of minutes.

Answer 20

Notice they tell you to not round off any intermediate result.
Keep the volume 11.3982 for this calculation.

Answer 21

BTW, above you must have accidentally pressed the wrong key in your calculator
because you used pi = 3.13.
It should be pi = 3.14.

Answer 22

oh okay, let me try

Answer 23

so now it's 11.3982 divided by 3?

Answer 24

That is why you got the exact volume of 11.3619 when it should be 11.3982

Answer 25

No. What is the rate of filling the tank? It's not 3 ft^3/min.

Answer 26

Divide by the filling rate.

Answer 27

the rate is 2.5

Answer 28

Correct.
11.3982/2.5

Answer 29

i got 4.55928

Answer 30

Exactly.
Now round off to the nearest minute.

Answer 31

5?

Answer 32

In other words, round off 4.55928 to the nearest whole number.

Answer 33

Correct.

Answer 34

Answer is 5