Primary 6 · Area · Question type 9.4
Triangles with the same height have areas in the same ratio as their bases, so mark the base in units before calculating.
Try the question yourself, or watch the lesson first.
Primary 6, on the MOE Primary Mathematics syllabus.
The lesson · 3 minutes 56 seconds
Watch: a triangle with its base cut into 2 parts and 3 parts
Another worked example
In triangle WXY, Z is a point on XY. The area of triangle WXZ is 24 cm² and the area of triangle WZY is 36 cm². XY is 20 cm. Find the length of XZ.
The working · Six lines
Written out in full, the way it should appear on paper.
The answer is 8 cm.
Practise · Modelled on top school exam questions
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Try it yourself
Use the base parts and the known triangle area to find the area of the whole triangle.
In triangle JKL, M is a point on KL such that KM : ML = 3 : 4. The area of triangle JKM is 27 cm². Find the area of triangle JKL.
Ans: 63 cm²
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Practice questions have no type labels, so read each question carefully before choosing a method. Area of Overlapping Shapes →