The lengths of side AB and side BC of a scalene triangle

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The lengths of side AB and side BC of a scalene triangle

Home » Aptitude » Plane Geometry » Question

The lengths of side AB and side BC of a scalene triangle ABC are 12 cm and 8 cm respectively. The size of angle C is 90°. Find the approximate length of side AC.

1. 12
2. 9
3. 14
4. 16

Correct Option: B

As per the given in question , we draw a figure right angle triangle ACB

∠C = 90°
Here , AB = 12 cm., BC = 8 cm.
∴ AC = √AB² - BC²
AC = √12² - 8²
AC = √144 - 64 = √80 ≈ 9 cm.