ACT Math Formulas

Which is the correct formula for the area of a circle?

• A = π r²

• A = 2π r²

• A=πd

• A=π d²

Tags

CCSS.7.G.B.4

Which formulas can be used to find the circumference of a circle?

• C = π r²

• C = 2π r

• C = π d

• C = 2πd

Tags

CCSS.7.G.B.4

How do you find perimeter?

• 1/2bh

• add all the sides

• length times width

• bh

Tags

CCSS.3.MD.D.8

What is the area of a triangle?

• A= ½bh

• A=π bh

• A= ½ l w

• A= ½ h

Tags

CCSS.6.G.A.1

What is the area of a rectangle ?

• A= Bh

• A= ½bh

• add up all the sides

• A= lw

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

What is the area of a trapezoid?

• A= ½Bh

• A= ½h (b_1 + b₂)

• A= π h²

• A= bh²

Tags

CCSS.6.G.A.1

What is the formula for volume of a CONE?

• V = π r²
• V = π r² h
• V =  ⅓ π r² h
• V =  ⅓ L W H

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

What is the formula for volume of a CYLINDER?

• V = πr²
• V = πr²h
• V =  ⅓πr²h
• V =  ⅓LWH

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

• Equation of an ellipse

• Equation of an circle

• Equation of an cube

• Equation of an triangle

Tags

CCSS.HSG.GPE.A.1

slope intercept form

• a^2+b^2 = c^2
• m+b=y
• y=mx+b
• y=a+mb

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3