Samriddhi bent a rope to form a circle. If she got the circumference of the circle is 30 cm more than its diameter. What was the length of radius? Answer us supposed to be 7 cm??

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?