Please help. Urgent.

One Link in chain was made from a cylinder that has a radius of 2 cm and a height of 20 centimeters. How much plastic coating would be needed to the surface of the chain link? Use 3.14 for pi.

251.2cm^2
314cm^2
345.4cm^2
471cm^2

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

step-by-step explanation:

the shape,the size and the distance