Find the area of this circle

Mickey needs to cut pieces of ribbon that are each 1 meter long tie onto balloons. if he has 8 pieces of ribbon that are each 1 dekameter long. how many 1 meter pieces of ribbon can he cut

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9

30 ! the graph shows the number of siblings different students have. select from the drop-down menus to correctly complete the statement.