3,631.68 square units.
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The area of a circle is calculated by multiplying the square of its radius by pi and can thus be represented with the equation: A = πr^2 where A= area and r=radius. The radius of a circle is equal to half its diameter. Consequently the first step to answering this question would be calculating the radius of the circle. r= d/2 = 68/2 =34 miles This means that the formula to calculate the area for a circle with a diameter of 68 miles would be: A = π(34^2) Working this through would give us: A = π(34^2) = 1156 π = 3631.68 square miles (2 d.p.)
The area of a circle with a diameter of 9.4 m is: 69.4 m2
If the diameter is 68, then the radius is 34. 3.14 * 34^2 = 3629.84
If the area of a circle is 8pi, its diameter is: 5.657 units.
Assuming a diameter of 5 inches.The area of this circle is: 19.63