ACT Formula Review

The following formula is for the area of :
A=πr²

• Square
• Cylinder
• Circle
• Triangular Prism

Area of a square:

• A=½bh
• A=πr²
• A=s²
• A=s+s+s+s

Area of a trapezoid:

• A=½bh
• A=½b₁h
• A=½(b₁+b₂)h
• A=πd

The following formula is for the area of:
A=½bh

• Rectangle
• Circle
• Triangle
• Trapezoid

Circumference of a Circle

• C=πr²
• C=2πr
• C=2π

What formula is this?

• midpoint

• slope

• distance

• average

What is the correct slope-intercept form?

• y = mx + b

• y = mb + x

• y = x

• y = -mx + b

Which of the following is the correct midpoint formula given two endpoints (x₁, y₁) and (x₂, y₂)?

• 
• 
• 
• 

How is the distance formula correctly written:

Which formulas could be used to find the perimeter of a rectangle?

• P = 2l + 2s

• P = 4s

• P = l + l + s + s

• P = s + s + s + s