In which of the following circles are the values of the area and circumference the same? A-B:
a circle with a radius of 2 feet
a circle with a diameter of 2 feet
a circle with a radius of 4 feet
a circle with a diameter of 1 foot

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a seven or king. (b) compute the probability of randomly selecting a seven or king or jack. (c) compute the probability of randomly selecting a queen or spade.

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?