I need some help with this question please thank you

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi

Are the corresponding angles congruent? explain why or why not.

Complete each statement from the information given and the triangle criterion you used. if the triangles cannot be shown to be congruent, leave the box for the second triangle blank and choose for reason “cannot be determined.” carbon - regular hexagon. ∆can ≅ ∆ by