What is the circumference of a gummy

The weight of an object in a particular scale is 175.2 lbs. the measured weight may vary from the actual weight by at most 0.1 lbs. what is the range of actual weights of the object

Find the value of the variable and the length of each secant segment.

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?