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I found one online that could: 

https://keisan.casio.com/calculator

Apparently the answer is:

8.6958018964024964732812048202007848333...

24320437414562347129566458022240706625...

71418868460852622188800945E+99424

or ... 

8.69762E+99424

I also found this: 

The Golden Exponent?  Any idea what this mysterious symbolism means? 

https://www.deviantart.com/kthaven/art/The-Golden-Exponent-774399203?ga_submit_new=10%3A1543364489

Let x be the horizontal distance that the ladder is from the wall = 6 ft

At that time....the top of the ladder is sqrt (r^2 - [6ft]^2) = sqrt (r^2 - 36ft^2) ft from the floor  

We have this

r^2  = x^2 + y^2 

Take the derivative of each term with respect to time

2r dr/dt = 2x dx/ dt   + 2y dy/dt  

y = sqrt (r^2 - 6^2)   = sqrt (r^2 - 36)

dr/dt = 0      [ the ladder length is constant ]

So when x  = 6 ft , the distance the bottom of the ladder is from the wall is increasing and the distance the top of the ladder is from the flooor is decreasing

So dx / dt = 2 ft / s     and dy / dt =   -3ft / s

So we have 

0 =    2(6ft) (2 ft/s) + 2sqrt (r^2 - 36ft^2)ft *(-3 ft/s)     

Divide out ft/s  

0 = 24ft   -  6sqrt (r^2 - 36ft^2) ft

6 sqrt (r^2 - 36ft^2) ft = 24 ft     divide both sides by 6

sqrt (r^2 - 36ft^2 ) =  4 ft        square both sides

r^2  - 36ft^2  = 16ft^2

r^2 =  (36 + 16) ft^2       take the square root of both sides

r = sqrt (52) ft  ≈  7.2 ft =  the ladder length

-2/3  /  3 3/4

3 3/4 = 15/4

-2/3  /  15/4 ======   -2/3 * 4/15 = -8/45

It's called Graphing Calculator 3D

(1/4) of the perimeter  = a side length

So

148 * (1/4)  =  37

The side length forms the hypotenuse of a right triangle

And (1/2) of the known diagonal length = 12    forms one leg of this triangle

So...using the Pythagorean Theorem, the other leg = 

sqr ( 37^2 - 12^2 )   = sqrt ( 1369 - 144) = sqrt ( 1225) = 35

And twice this is the length of the other diagonal =  70

As you are aware, you have asked many of these questions recently.

What have you done. I mean how have you already tried to answer this question for yourself?

Why don't you interact with answerers?

Occasionally, not usually, you do give an answerer a point point, but I have not noticed that you ever interact with answerers.

I've not seen you say thank you (with words) or ask them questions or attempt to start an answer for yourself.

This would be totally unacceptable on any other proper mathematics forum.

Ah....I made a mistake....let me do a corrected post...thanks for pointing out my error !!

They are trying to trick you, mathtoo....it's a "disguised" conic

For instance...look at this graph : https://www.desmos.com/calculator/kdzjzqgkr4

It appears that for the function     y / x^2 = 3  the point (0,0) couldn't be on the graph

But....rearranging the equation as   y = 3x^2    shows that it is a parabola with a vertex at (0,0)

Wait,  this circle intersects the two axes at several points, whereas no point with x=0 or y=0 lies on the graph of the original equation

Well   the "width" or "length" is really dependent upon your point  of view

Whatever....the floor dimensions are 20 x 18

And the height = 8 ft

And it is a rectangular prism....

Thanks, EP

That looks pretty circular to me.....!!!!!

Welllllll......here is a graph.....

Another tricky one, RP

A perpendicular line  to   x  =   a     will be     y =  b

So..... a line perpendicular to x = 8   will   be   y = the y coordinate of the given point

So....we have

y = -2

See the graph here to get a feel for this :  https://www.desmos.com/calculator/2av3sxef7g

yes that makes perfect sense but does that not also apply to 8-2p=0?

as 2pi^2=-2p thank you for responding

oops, yeah. Good job, CPhill!

Multiply both sides by x^2y^2    and we get

y^2 + x^2  =    x + 4   rearrange as

x^2 - 1x + y^2  = 4      complete the square on x

x^2 - 1x + 1/4   + y^2 = 4 + 1/4     factor the first three terms

(x - 1/2)^2 + (y - 0)^2 = 17/4

This is a circle centered at     (1/2, 0 )  and a radius of  sqrt (17) / 2

But thank you

16/(y/2) = 16 * 2/y = 32/y

We first want to make the denominator a real number

We can do this by multiplying the the numerator/denominator by the conjugate of 2i - 1

This is 2i + 1

Next...we see that to  make the numerator a real number....we need to have  (16 + p) i = 

0i

I see that I can do this if   p = - 16

Does that make sense ???

56cl per 3 l water

12 l of water is 4 of these   (4 x 3 = 12)

12 l + 4 * 56cl

12l + 224 cl   = 12l + 2l + 24/100 l= 14.24 l

I didnt mean for you to do everything ouo

OK.....good job   !!!

Thanks! I figured it out.

OK....using my method we have

y = slope ( x -   x coordinate ) + y coordinate

y = (1/3) ( x -  - 3 )    + 7

y = (1/3)( x + 3) + 7

y = (1/3)x + (1/3)(3) + 7

y = (1/3)x + 1 + 7

y = (1/3)x + 8

Is that easy, RP ???

First one

Cost   = Sq Ft   x Price per Sq Ft  =

440.25 * .89  =

$391. 82

Second one

Friend #1 can paint 75% of his house in 3.25 hours.

Friend #2 can paint 60% of his house in 2.96 hours.

Friend #3 can paint 56% of his house in 2.89 hours. 

To see which can paint the fastest....take the given time and divide by the percent expressed as a decimal...the "least" answer is the fastest

So...we have

3.25 /.75

2.96 / .60

2.89 / .60

Can you finish it, DP????