cho tứ diện abcd có ab, ac, ad đôi một vuông góc có ab=6a, ac=7a ,ad=7a, và m, n,p lần lượt là trung điểm của bc, cd, db. tính thể tích tứ diện amnp

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.

What is the slope of the line shown below?

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?