Can somebody me answer questions 1-!

Volume of cylinder with a radius of 8cm and height of 25 cm

In a certain pentagon, the interior angles are a,b,c,d,e where a,b,c,d,e are integers strictly less than 180. ("strictly less than 180" means they are "less than and not equal to" 180.) if the median of the interior angles is 61 and there is only one mode, then what are the degree measures of all five angles?

Complete the statements about the system of linear equation respresented by the tables the equation respented the left table is