# Which rocky peak rises 1296 feet above Rio de Janeiro?

You are probably referring to Sugar Loaf peak which is near Rio de Janeiro. It is both rocky and steep-sided. It is 1,296 feet.

### What two numbers add up to 72 and multiply to 1296?

Let the two numbers be x & y: x + y = 72 x * y = 1296 rearrange the first equation so [y = 72 - x], and substitute this into the second equation: x * (72 - x) = 1296 ---> 72*x - x² = 1296 ---> 0 = x² - 72x + 1296 Now use the quadratic equation: x = (72 +/- sqrt(72² - 4*1*1296))/2 = 72/2 = 36. So 36 +…