the slant height and the radius of the base of a cone are in the ratio 2:1. if the radius of the cone is 145mm, calculate the total surface area?​

What is the area of the triangle 10 13 12

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%

The given diagram shows the parts of a right triangle with an altitude to the hypotenuse. using the two given  measures, find the other four.