In rhombus EFGH below, EF= 15 cm and EG= 18 cm
Find the area of the rhombus.
Be sure to include the correct unit in your answer.

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.