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Area of Compound Shapes

Geometry and Measures Area of Compound Shapes

🎬 Video Tutorial

(0:01) Definition of Compound Shape: A compound shape is formed by combining simple shapes (e.g., rectangles, triangles, circles).
(0:24) Method and Examples for Finding Area: Break down the compound shape, calculate each simple shape’s area, and then add or subtract as necessary based on the layout of the compound shape.
(1:50) Application – Painting Cost Calculation: Calculate the area of a wall minus a door and circular window, then multiply by cost per square metre.

📂 Revision Cards

Diagram explaining how to find the area of a compound shape by breaking it into simpler shapes, then summing or subtracting their areas.

Diagram showing the area of a compound shape made of two rectangles with dimensions and steps for calculating total area, totalling 12 square metres.

Diagram showing a compound shape composed of a rectangle and a right-angled triangle, with their respective and total areas calculation.

Diagram showing the calculation of the shaded area of a wall, excluding a door and window, with a total painting cost of £46 at £5 per square metre.

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