The isosceles triangle shown is rotated about line k. the perimeter of the triangle is 58 units. which best describes the resulting three-dimensional shape?

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?