0.7 repeating as a decimal in simplest form

The radius of the base of a cylinder is 10 centimeters, and its height is 20 centimeters. a cone is used to fill the cylinder with water. the radius of the cone's base is 5 centimeters, and its height is 10 centimeters.

In the 30-60-90 triangle below side s has a length of and side r has a length

Explain how you can use the associative property to evaluate (7x50)x4.