A= [(6.5+6.5√3)(6.5√3)]/2
How would you solve this? I'm having trouble...could someone show the steps? I keep getting a different answer than what's in the book. Thanks.
Romsek told you how to get the exact answer, which is not hard if you remember that $\sqrt{3}$ is just a number.
However if the problem asks you for an answer correct to 2 decimals or something like that, it is not asking for an exact answer at all; it is asking for an approximate answer. Are you allowed to use a calculator or a computer for arithmetic computations?