If the circumference of a round barn is 56 meters, what is the diameter of the barn to the nearest whole number? use 3.14 for pi

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?

State if the two triangles are congruent. if they are, state how you know?

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank