Area, Circles and Angles Review

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 circle?

Back

Area = π × radius².

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2 × π × radius.

Front

What is the definition of a composite shape?

Back

A composite shape is made up of two or more simple shapes.

Front

How do you find the area of a composite shape?

Back

Calculate the area of each simple shape and then sum them up.

Front

What is the definition of an angle?

Back

An angle is formed by two rays with a common endpoint called the vertex.

Front

What are the different types of angles?

Back

Acute (less than 90°), right (90°), obtuse (greater than 90° but less than 180°), straight (180°).

Front

What is the area of a circle with a radius of 7 cm?

Back

Area = π × 7² = 154 cm² (approximately).

Front

What is the relationship between the diameter and radius of a circle?

Back

Diameter = 2 × radius.

Front

How do you calculate the area of a triangle?

Back

Area = 1/2 × base × height.