If the radius and the slant height of a right circular cone are each multiplied by 3, by what factor is the surface area of the cone multiplied? (a.) 3 (b.) 6 (c.) 9 (d.)27

Someone answer asap for ! the boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a. e = 2b - 212 b. b = 2e - 212 c. e = -2b + 212 d. b = -2e + 212

The anwser cause i do not understand just plez

What is the measure of angle 1? a.28 b.152 c.168 d.64