Are you a coochie scout​

What is the approximate circumference of the circle shown below?

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.

At 6 1/2 cents per pound of string beans how much does 7 pounds cost