Unit 4b Preview: Area Basics

Front

What is the formula for the area of a rectangle?

Back

A = l × w (Area = length × width)

Front

What is the area of a triangle?

Back

A = 1/2 × b × h (Area = 1/2 × base × height)

Front

What is the area of a circle?

Back

A = πr² (Area = pi × radius squared)

Front

What is the formula for the area of a trapezoid?

Back

A = 1/2 × (b₁ + b₂) × h (Area = 1/2 × (base1 + base2) × height)

Front

What is the relationship between circumference and diameter?

Back

Pi (π) is the ratio of circumference to diameter.

Front

What is the area of a parallelogram?

Back

A = b × h (Area = base × height)

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., m², cm², yd²) are used to measure area.

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 the area of a square?

Back

A = s² (Area = side length squared)