If the lengths of three sides of a triangle are 15cm, 20cm and 25cm respectively, the height of the longest side of the triangle is?

The height of the longest side of the triangle is 12 cm
This is a right triangle. The 15 cm and 20 cm sides are right angles,
Height on hypotenuse = (15 × 20) △ 25 = 300 △ 25 = 12 cm

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