AC9M7M01Year 7MeasurementPractised on site

AC9M7M01 — Year 7 Measurement

Official Curriculum Content Description:

solve problems involving the area of triangles and parallelograms using established formulas and appropriate units

Worked Examples (1)

Example 1Area of Triangles
A triangle has base 33 cm and height 2323 cm. What is its area?
Common mistake: Used base x height without halving for the triangle's 1/2.
Correct Answer:34.5 cm234.5\text{ cm}^2
Accepted: A unit is optional (cm^2, cm², sq cm all accepted).
Worked Solution:
Area =12×base×height= \tfrac{1}{2} \times \text{base} \times \text{height}. Multiply the base by the height: 3×23=693 \times 23 = 69. Halve that: 69÷2=34.5 cm269 \div 2 = 34.5\text{ cm}^2.

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