What area of a nickel plating should be used to cover the front of this regular heptagonal coin if the radius is 15mm and the sides are 13.02mm?
Round your answer to the nearest hundredth

Twenty points. 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

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d?

What is the the greatest common factor ?