The volume v, measured in mm3, of an object can be calculated by v=4πr353, where r is the radius of the object. if the radius is 243 mm, find the volume of the object. round your answer to the nearest whole number. use 3.14 for π.

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?