Find the value of the missing angle. include your work and you!

The formula of the sum of the measures of the interior angles of a polygon:

We have the pentagon → n = 5.

Sustitute:

Therefore we have the equation:

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540