The diameter of a circle is 20 miles. what is the angle measure of an arc bounding a sector with area 15 square miles?

What is the distance between (–2 1/2,-3) and (1, –3)?

Aswimming pool is a rectangle with semicircles on the end. the rectangle is 12 meters wide and 30 meters long. the diameter and width of the swimming pool are equal. sketch and label an overhead diagram of the swimming pool. find the area of the swimming pool floor.

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'