A machine part is a 4-in.-square piece of metal plate with a round hole 2 in. in diameter drilled through the center. What is the equation of the circle given that the piece of metal is placed in Quadrant 1 with its corner at the origin?

Are carpet coast $15 per square metre. the total delivery charge is $21 peter buys n squared metres of carpet what is the expression which represents the total cost in $

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles