a horse pasture is formed by a large semi circle grassy area and triangle riding area. Base of the riding area is 50 ft and extends to a height of 75ft. What is the total area of the pasture if the height of the riding area equals the diameter of the grassy area?

The answer to that is 6

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.