Can someone me with my geometry homework: )

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

Use the distributive law to multiply. 3(4x + 5y + 6)

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of florida was approximately two times the population of california. b. the population of florida was approximately twenty times the population of california. c. the population of california was approximately twenty times the population of florida. d. the population of california was approximately two times the population of florida.