Suppose you have a triangle (which may not necessarily be a right triangle) with sides $\displaystyle {a}={27},$ $\displaystyle {b}={30},$ and $\displaystyle {c}={12},$ use Heron's formula to find the following:

A) The semiperimeter of the triangle:

Answer: The semiperimeter is units long.

B) The area of the triangle:

Answer: The area is square units.
Round your area calculation to two decimal places (hundredths).