Perimeter With Variables

Front

What is the formula for the perimeter of a rectangle?

Back

Perimeter = 2(length + width)

Front

What does the variable 'x' typically represent in algebraic expressions?

Back

A variable that can take on different values.

Front

How do you calculate the perimeter of a triangle?

Back

Add the lengths of all three sides.

Front

What is the formula for the area of a rectangle?

Back

Area = length × width

Front

What is the difference between perimeter and area?

Back

Perimeter is the distance around a shape; area is the space inside a shape.

Front

If a rectangle has a length of 3x and a width of 2, what is its perimeter?

Back

Perimeter = 2(3x + 2) = 6x + 4.

Front

What is the expression for the perimeter of a rectangle with length 'x' and width 'y'?

Back

Perimeter = 2(x + y) = 2x + 2y.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 × base × height.

Front

If the length of a rectangle is 4x and the width is 3, what is the area?

Back

Area = 4x × 3 = 12x.

Front

What does the term 'variable' mean in mathematics?

Back

A symbol used to represent an unknown value.