the width of a rectangle is 8 less than the product of 5 and a number X the length is twice the width calculate the perimeter of the shape​

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 range for 31,39,29,34,37,24,36,33,34,28

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