Circle, Square, and Triangle

The answer is: the circle has area \(\dfrac{1}{4\pi} \mbox{ m}^2 \approx 0.0796 \mbox{ m}^2\), the square has area \(0.0625 \mbox{ m}^2\), and the equilateral triangle has area \(\dfrac{\sqrt{12}}{72} \mbox{ m}^2 \approx 0.0481 \mbox{ m}^2\).