A circular swimming pool has a radius of 15 ft. There is all away around the pool thats is 3 ft wide. what is the circumference of the outer edge of the pool

Since the radius is 15 feet you would multiply by 2 to get the diameter which is 30, adding the 3 feet on each side gives you 36, then using the formula, C=2(pie)r you would get C=113.1

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.