Area of plane figures

Front

What is the formula for the area of a parallelogram?

Back

Area = base × height

Front

What is the area of a triangle?

Back

Area = (base × height) / 2

Front

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

Back

Diameter is twice the radius; Diameter = 2 × radius.

Front

How do you calculate the area of a rectangle?

Back

Area = length × width

Front

What is the area of a square?

Back

Area = side × side

Front

What is the formula for the area of a trapezoid?

Back

Area = (base1 + base2) × height / 2

Front

What is the area of a circle?

Back

Area = π × radius²

Front

What is the unit of area?

Back

Square units (e.g., cm², m², ft²)

Front

How do you find the height of a triangle if you know the area and base?

Back

Height = (Area × 2) / base

Front

What is a composite figure?

Back

A figure made up of two or more simple shapes.