How many zeros are at the end of the number ^

Consider circle h with a 3 centimeter radius. if the length of minor arc what is the measure of zrst?

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.

In the diagram, gef and hef are congruent. what is the value of x