Topics
Measurement
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New Zealand
Level 7 - NCEA Level 2

Area of non right angled triangles

Lesson
Practice

Interactive practice questions

Calculate the area of the following triangle.

Round your answer to two decimal places.

A triangle is depicted with the measurements of its two sides and their included angle. The included angle, highlighted by a blue-shaded arc, measures $50^\circ$50° and is adjacent to sides measuring $12$12 m and $13.1$13.1 m.
Easy
2min

Calculate the area of the triangle.

Round your answer to two decimal places.

Easy
< 1min

Calculate the area of the following triangle.

Round your answer to the nearest square centimetre.

Easy
1min

The diagram shows a triangular paddock with measurements as shown.

Easy
2min
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Outcomes

M7-4

Apply trigonometric relationships, including the sine and cosine rules, in two and three dimensions

91259

Apply trigonometric relationships in solving problems

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