8th Math Semester Test

Front

What is a radius in a circle?

Back

A radius is a line segment from the center of the circle to any point on its circumference.

Front

What is a diameter in a circle?

Back

A diameter is a line segment that passes through the center of the circle and has its endpoints on the circle. It is twice the length of the radius.

Front

What is the formula for the volume of a cylinder?

Back

Front

What is the formula for the volume of a cone?

Back

Front

What is the formula for the volume of a sphere?

Back

Front

How do you isolate a variable in an equation?

Back

To isolate a variable, perform inverse operations to both sides of the equation until the variable is alone.

Front

What is the first step to solve the equation 3c + 5 = 23?

Back

Subtract 5 from both sides to get 3c = 18.

Front

What is the solution to the equation 3c + 5 = 23?

Back

c = 6.

Front

What is the relationship between the radius and diameter of a circle?

Back

The diameter is twice the length of the radius.

Front

What does it mean to solve for a variable?

Back

To solve for a variable means to find its value that makes the equation true.