area of a regular hexagon

[breezemjr]

What is the area of a regular hexagon whose sides are each 12 inches long? (Round to the nearest square inch.)

P=6x12
P=72

A=1/2aP
A=1/2(22)(72)
A=1/2(1584)
A=792

marked incorrect What did I do wrong???

 

[tkhunny]

You tell me.

\(\displaystyle 12\cdot\frac{1}{2}\cdot 6\cdot \left(6\cdot\sqrt{3}\right)\)