A stainless steel piano heater is a square pyramid. The length of one side of the base is 20.6 in. The slant height of the pyramid is 91.1 in. What is the height of the pyramid? The height of the pyramid is about ___ in.

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

The answer is