2D11 Area of Composite Shapes Silver 21-25

Front

What is the formula for calculating the area of a rectangle?

Back

Area = length × width.

Front

What is the formula for calculating the area of a triangle?

Back

Area = 1/2 × base × height.

Front

What is the formula for calculating the area of a circle?

Back

Area = π × radius² (use 3.14 for π).

Front

How do you find the area of a composite shape?

Back

Divide the shape into simpler shapes, calculate their areas, and then sum them.

Front

What is the perimeter of a rectangle?

Back

Perimeter = 2 × (length + width).

Front

What is the perimeter of a triangle?

Back

Perimeter = sum of the lengths of all three sides.

Front

What is the area of a square?

Back

Area = side × side.

Front

How do you calculate the area of a shaded region?

Back

Find the area of the larger shape and subtract the area of the unshaded part.

Front

What is the area of a circle with a radius of 5 cm? (Use 3.14 for π)

Back

Area = 3.14 × (5)² = 78.5 cm².

Front

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

Back

Area = 10 m × 4 m = 40 m².