Please help with at least one of them, please

I'll give you brainless. Please

How are sas and sss used to show that two triangles are congruent?

What ia the sum if the first 7 terms of the geometric series

In the diagram, be and ad pass throughthe center of circle o, and the area ofsector aoc is 47.45 square units. what isthe area of sector boc? use the value =3.14, and round your answer to two decimalplaces.22.33 square units25.12 square units