Area of Basic and Composite Shapes FLASHCARD

Front

What is the formula for the area of a circle?

Back

Area = πr², where r is the radius of the circle.

Front

What is the formula for the area of a rectangle?

Back

Area = length × width.

Front

What is the formula for the area of a parallelogram?

Back

Area = base × height.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 × base × height.

Front

What is the formula for the area of a trapezoid?

Back

Area = 1/2 × (base1 + base2) × height.

Front

What is the perimeter of a rectangle?

Back

Perimeter = 2 × (length + width).

Front

What is the difference between area and perimeter?

Back

Area measures the space inside a shape, while perimeter measures the distance around a shape.

Front

What units are used to measure area?

Back

Square units (e.g., square centimeters, square meters, square feet).

Front

How do you find the area of a composite shape?

Back

Divide the shape into simpler shapes, find the area of each, and then sum them up.

Front

What is a rectilinear figure?

Back

A shape made up of straight lines and right angles.