What is the mean of 3 and 5? ! i really need urgent

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length

52 cm radius = diameter = area = circumference = circumfer

Acompany charges $0.10 for each letter engraved. bobby plans to spend no more than $5.00 on the engraving on a jewelry box. write and solve an inequality to find the maximum number of letters he can have engraved.