4 The diagram shows a regular hexagon and a regular pentagon. Calculate the size of the angle marked x.
You must show all your working.
Interior angles in a Pentagon sum up to 540 degrees
Each angle is 108 degrees

If angle 2=3x +1 and angle 3=2x +4what is angle 2

Ineed with number 6 , explain how to get 1978

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.