In any circle the ratio of circumference to diameter is constant and is approximately equal to 22:7. What is the circumference of a circle if its diameter is 10 in?

What properties allow transformation to be used as a problem solving tool

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

Geometry in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.