Tamil Nadu Board of Secondary EducationSSLC (English Medium) (5 to 8) Class 8

Find the unknown side in the following triangles - Mathematics

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Sum

Find the unknown side in the following triangles

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Solution

From ΔXYZ, by Pythagoras theorem,

= YZ2 = XY2 + XZ2

⇒ XY2 = YZ2 – XZ2

Z2 = 392 – 362

= 1521 – 1296

= 225 = 152

z2 = 152

⇒ z = 15

  Is there an error in this question or solution?
Chapter 5: Geometry - Exercise 5.2 [Page 178]

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Tamil Nadu Board Samacheer Kalvi Class 8th Mathematics Answers Guide
Chapter 5 Geometry
Exercise 5.2 | Q 4. (iii) | Page 178

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