The radius of a circle is 2. What's the circumference and area of the circle? One more question The mass ratio of chocolate to milk is 2:9 {1} If you have 400 grams of chocolate, how many grams do you need

The radius of a circle is 2. What's the circumference and area of the circle? One more question The mass ratio of chocolate to milk is 2:9 {1} If you have 400 grams of chocolate, how many grams do you need

The first is: perimeter 2x2 = 4 4x3.14 = 12.56, area 2x2 = 4 4x3.14 = 12.56, the second is: 400 divided by 2 = 200 (g) 200x9 = 1800 (g)