A pilot can travel 363 miles with the wind in the same amount of time as 297 miles against the wind find the speed of the wind if the pilot speed and still air is 210 mph

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Joe has a rectangular chicken coop. the length of the coop is 4 feet less than twice the width. the area of the chicken coop is 510 square feet. what is the length of the chicken coup?

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.