PSAT Math Practice

Front

What is the formula to find the sum of the interior angles of a polygon?

Back

The sum of the interior angles of a polygon with n sides is given by the formula: (n - 2) * 180 degrees.

Front

If the sum of the interior angles of a polygon is 1800 degrees, how many sides does the polygon have?

Back

12 sides.

Front

What is the value of the function f(x) = 2x^2 - 3x + 5 when x = 2?

Back

f(2) = 7.

Front

How do you calculate the area of a rectangle?

Back

Area = length × width.

Front

If the area of a rectangle is 45 square units and the length is 9 units, what is the width?

Back

Width = 5 units.

Front

What is the formula for the volume of a cylinder?

Back

Volume = πr^2h, where r is the radius and h is the height.

Front

What is the volume of a cylinder with a radius of 3 units and a height of 4 units?

Back

Volume = 36π cubic units.

Front

What is the value of the function g(x) = x^3 - x when x = -2?

Back

g(-2) = -6.

Front

What is the process to evaluate a polynomial function at a given value?

Back

Substitute the value into the polynomial and simplify.

Front

What is the relationship between the sides of a polygon and the sum of its interior angles?

Back

The number of sides determines the sum of the interior angles using the formula (n - 2) * 180 degrees.