What is the area of a circle that is 6.8 yd?

First, I'll assume that you mean the radius of the circle is 6.8 yards.

The area of a circle is found using the formula (pi)r2

Note: the radius of a circle is half its diameter.

Substituting yields (3.14)(6.82) = (3.14)(46.24)

= 145.1936

Remember to round to the correct number of significant figures - in this case 2.

Your final answer will be 150 yd2