The volume V, of height h and base radius r is ⅓πr²h. a) obtain a formula for r.
b) Find the base radius of a cone of height 14cm and volume 91⅔cm³. (use the value 22/7 for π).

Tom and lilly rented a house for $12,000 last year. at the start of the year they bought the house they had been renting directly from the owner for $250,000. they believe they could rent it for $12,000 this year, but stay in the house. how much does tom and lilly’s decision to buy the house change gdp? a. it reduces gdp by $12,000 b. it does not change gdp c. it raises gdp by $238,000 d. it raises gdp by $250,000