What is 18 as a percentage of 144?

ANd its not 12.5%

Anonymous

Alan and Melody are, of course, right! But, if it's not 12.5%, then your question's not right!

There's a similar question... and that is:  What is 18% of 144? 

In this case, 144 is divided by 100 and the result multiplied by 18.

$${\frac{{\mathtt{144}}}{{\mathtt{100}}}}{\mathtt{\,\times\,}}{\mathtt{18}} = {\mathtt{25.92}}$$

So, 18% of 144 is 25.92

Consider this...

18 as a percentage of 144 = 12.5%

12.5% of 144 = 18

18% of 144 = 25.92

25.92 as a percentage of 144 = 18%

If a= {1,2,3,4,5,6,7,8} and b= {2,4,6,8,10,12} the intersection of sets a and b is

A = {1,2,3,4,5,6,7,8}        B = {2,4,6,8,10,12}  

A ∩ B = {2,4,6,8}

From Wikipedia:  "The intersection of A and B, denoted by A ∩ B, is the set of all things that are members of both A and B."

@Dragonlance:/  I've deleted my 2nd post because of its "offensivenes". I suggest you do the same. I'm willing to take everything back what I wrote EXCEPT the fact that the temperature of 233.16K is higher then -40C or -40F! Even the "part of me that never grew up" wouldn't let it happen. 

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@DarkBlaze:/ You're half right;   - 40ºF = - 40ºC , but  273.16K  is slightly higher  (+ 0.01) then these two.  

Circle area:   $$A = pi*r^2$$

The golden rectangle is inscribed in a circle with a radius of 10cm. Find the area of that rectangle.

The ratio of the sides a and b of the golden rectangle is calculated by the upper formula.

Because the ratio of the sides of this rectangle is constant,  so must be the ratio of the angles that these sides form with rectangle's diagonal!

a = 1,   b = 1/1.61803398874989485 = 0.61803398874989484752

tan(B) = 1/ 0.61803398874989484752

B = ≈58.28^o        A = ≈31.72^o

Circle's radius  r = 10cm,    rectangle's diagonal  d = 20cm      a = ?,   b = ?  and  A = ?

cos(A) = a/d             b = sqrt(d² - a² )                      A = a*b

a = d*cos(A)            b = sqrt(20² - 17.013²)             A = 17.013*10.515

a = 17.013cm           b = 10.515cm                          A =  ≈178.88cm²

I was aware of the fact that the unknown side could've been either the adjacent side, or the hypotenuse.

what is the pythagoras' if the value is 12cm 18cm and 8cm + ?cm

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a = 12cm,   b = 18cm   and   c = (8cm + Xcm)

             a² + b² = c²

            12² + 18² = c²                  

          144 + 324 = 468

            X = sqrt(468) - 8

            X = 13.63cm