A triangular pyramid has an isosceles triangular base. The base edge of the triangular base is 10 inches and the height of the base is 16 inches. The volume of the pyramid is 480 inches. What is the height of the pyramid, in inches?

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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.