Calculating Area of Shapes

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 triangle?

Back

Area = 1/2 × base × height

Front

What is the formula for the area of a circle?

Back

Area = π × radius²

Front

What is the circumference of a circle?

Back

Circumference = 2 × π × radius

Front

What does 'diameter' mean in relation to a circle?

Back

Diameter is the distance across the circle through its center, equal to twice the radius.

Front

If the radius of a circle is 5 cm, what is the diameter?

Back

Diameter = 10 cm

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

How do you calculate the area of a square?

Back

Area = side × side (or side²)

Front

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

Back

Area = 154 cm² (using π ≈ 3.14)

Front

What is the area of a triangle with a base of 10 m and a height of 5 m?

Back

Area = 25 m²