Topic 52 Composite Area

Front

What is the formula for the area of a triangle?

Back

A = ½bh, where b is the base and h is the height.

Front

What is the formula for the area of a circle?

Back

A = πr², where r is the radius.

Front

How do you find the area of a composite figure?

Back

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

Front

What does 'shaded region' refer to in geometry?

Back

The part of a figure that is highlighted or marked, often representing the area of interest.

Front

What is the diameter of a circle?

Back

The diameter is twice the radius, d = 2r.

Front

If the radius of a circle is 3 cm, what is its area?

Back

A = π(3)² = 28.27 cm² (approximately).

Front

What is the area of a rectangle?

Back

A = length × width.

Front

What is the difference between area and perimeter?

Back

Area measures the space inside a shape, while perimeter measures the distance around it.

Front

How do you calculate the area of a triangle with a base of 10 cm and a height of 5 cm?

Back

A = ½(10)(5) = 25 cm².

Front

What is the area of a circle with a radius of 4 cm?

Back

A = π(4)² = 50.27 cm² (approximately).