1-4 I’ll give brainliest to first correct answer

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.

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

What is the circumference of a circle with an area of 50.24 cm²?