8th Grade Formulas Quiz

What are the formulas for the circumference of a circle? Check all that apply.

• C = 2 π r

• C = π r ²

• C = π r ² h

• C = π d

What is the formula for the area of a circle?

• A = π r ³

• A = 1/3 π r ²

• A = π r ²

• A = l w h

What is the formula for the volume of a cube?

• A = π r ²

• A = l w h

• A = 4/3 π r ³

• A = π r ² h

What is the formula for the volume of a cylinder?

• V = 1/3 π r ² h

• V = 4/3 π r ³

• V = π r ²

• V = π r ² h

What is the formula for the volume of a cone?

• V = π r ² h

• V = 1/3 π r ² h

• V = π d

• V = π r ²

What is the formula for the volume of a sphere?

• V = 4/3 π r ³

• V = π d

• V = 1/3 π r ² h

• V = π r ²

How do you find the radius of a circle when given the diameter?

• r = π d

• r = π

• r = d / 2

• r = l w h

How do you find the diameter of a circle when given the radius?

• d = r / 2

• d = 2 r

• d = π

• d = 2 π r

What is the formula for slope-intercept form?

• y = m x + b

• y - y ₁ = m (x - x ₁)

• a x + b y = c

• y = 2 π r

What is the formula for the standard form of an equation?

• y = m x + b

• y = π r ²

• y = ½ a x - c

• a x + b y = c