Magoosh 32 ACT Math Formulas – What to Absolutely Study

What does the ACT not provide at the beginning of the math test?

• A list of basic math formulas

• A calculator

• Instructions on how to solve problems

• A time limit for each section

What is the formula for the area of a triangle?

• 1/3 base × height

• base × height

• 1/2 base × height

• base + height

What does SOHCAHTOA stand for in trigonometry?

• sin = opposite/hypotenuse, cos = adjacent/hypotenuse, tan = opposite/adjacent

• sin = adjacent/opposite, cos = hypotenuse/adjacent, tan = adjacent/opposite

• sin = hypotenuse/opposite, cos = opposite/adjacent, tan = adjacent/hypotenuse

• sin = adjacent/hypotenuse, cos = opposite/hypotenuse, tan = hypotenuse/adjacent

What is the formula for the volume of a sphere?

• 4/3πr^3

• 2πr^3

• πr^2

• 4πr^2

How do you calculate the circumference of a circle?

• 2πr

• πr^2

• 2r

• πd

What is the formula for the volume of a cylinder?

• πr^2h

• 2πrh

• 2πr^2h

• πr^3

What is the slope-intercept form of a line?

• y = m/x + b

• y = mx - b

• y = mx + b

• y = m(x + b)

What is the formula for the area of a rectangle?

• 2(length + width)

• length + width

• length/width

• length × width

How is the Pythagorean Theorem expressed?

• a^2 + c^2 = b^2

• a^2 - b^2 = c^2

• a^2 + b^2 = c^2

• a^2 * b^2 = c^2

What is the formula to find the probability of an event?

• Number of desired outcomes - number of total outcomes

• Number of total outcomes / number of desired outcomes

• Number of total outcomes - number of desired outcomes

• Number of desired outcomes / number of total outcomes