Anyone please help this is urgent

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made

The area of a circle is equal to 1 dm². find the radius of the circle.

3x = 729 solve for x plz . it's urgent. will mark