A pipe has a diameter of 10 cm10 \text{ cm}10 cm. Find the cross-sectional area in square meters\text{square meters}square meters (A=πd24A = \frac{\pi d^2}{4}A=4πd2).
0.00785 m20.00785 \text{ m}^20.00785 m2
0.785 m20.785 \text{ m}^20.785 m2
78.5 m278.5 \text{ m}^278.5 m2
0.000785 m20.000785 \text{ m}^20.000785 m2