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The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length

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 california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.