If the three sides of a triangle are 21

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Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Mensuration: 2D

Question:

If the three sides of a triangle are 21 cm, 20 cm and 29 cm long, what is the area of the triangle?

Options:

210 cm²

190 cm²

290 cm²

200 cm²

Correct Answer:

210 cm²

Explanation:

We know that the triangle with 21 cm, 20 cm and 29 cm sides is a right angle triangle.

So, the area = \(\frac{1}{2}\) × Base × Height

= \(\frac{1}{2}\) × 20 × 20 = 210 cm²