Area of Shapes

Front

What is the definition of the area of a shape?

Back

The area of a shape is the amount of space inside the shape, measured in square units.

Front

What is the formula for the area of a rectangle?

Back

A = length × width.

Front

What is the formula for the area of a triangle?

Back

A = ½ × base × height.

Front

What is the formula for the area of a circle?

Back

A = πr², where r is the radius.

Front

What is a radius?

Back

A radius is a line segment from the center of a circle to any point on its circumference.

Front

What is a diameter?

Back

A diameter is a line segment that passes through the center of a circle and has its endpoints on the circle.

Front

How do you find the area of a square?

Back

A = side × side or A = side².

Front

What is the area of a circle with a radius of 5 cm?

Back

A = π(5)² = 78.54 cm² (approximately).

Front

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

Back

A = 10 cm × 4 cm = 40 cm².

Front

What is the area of a triangle with a base of 6 cm and a height of 3 cm?

Back

A = ½ × 6 cm × 3 cm = 9 cm².