Area of Rectangles, Triangles and Circles

Front

What is the formula to find the area of a rectangle?

Back

Area = length × width

Front

What is the formula to find the area of a triangle?

Back

Area = 1/2 × base × height

Front

What is the formula to find the area of a circle?

Back

Area = πr²

Front

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

Back

The radius is the distance from the center of the circle to any point on its circumference.

Front

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

Back

The diameter is twice the length of the radius; it is the distance across the circle through its center.

Front

If the radius of a circle is 6 cm, what is the area?

Back

Area = π(6)² = 36π cm² (approximately 113.1 cm²).

Front

What is the area of a rectangle with a length of 10 cm and a width of 4 cm?

Back

Area = 10 cm × 4 cm = 40 cm².

Front

What is the area of a triangle with a base of 8 cm and a height of 5 cm?

Back

Area = 1/2 × 8 cm × 5 cm = 20 cm².

Front

What is the meaning of 'area' in geometry?

Back

Area refers to the amount of space inside a shape.

Front

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

Back

The diameter is twice the radius.