The diameter of a circle is 20 centimeters. What is the circumference?

The standard distance between studs in a house is 1.5 feet. if you have a set of blueprints for a house that mark every 1.5 feet with 2 in., by how many inches will a 13-foot wall be represented?

What is the relationship between all triangles that can be drawn given the same three angles

Which graph represents the parent function of y=(x+2)(x-2)