A circle has a radius of 43 meters. What is the area, in square meters, of

Choice D is correct. The area, $A$, of a circle is given by the formula $A=\pi r^2$, where $r$ is the radius of the circle. It’s given that the circle has a radius of $43$ meters. Substituting $43$ for $r$ in the formula $A=\pi r^2$ yields $A=\pi {\left(43\right)}^2$, or $A=\mathrm{1,849}\pi$. Therefore, the area, in square meters, of the circle is $\mathrm{1,849}\pi$.

Choice A is incorrect. This is the area, in square meters, of a circle with a radius of $\sqrt{\frac{43}{2}}$ meters.

Choice B is incorrect. This is the area, in square meters, of a circle with a radius of $\sqrt{43}$ meters.

Choice C is incorrect. This is the circumference, in meters, of the circle.