If the length of three sides of a triangle is 25 cm, 20 cm and 15 cm, then find
the area of the triangle
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Answer:
s = (25 + 20 + 15 ) / 2 = 30
Area = √ s ( s- a ) ( s- b ) ( s- c )
= √ 15 ( 15 - 25 ) ( 15 - 20 ) (15 - 15 )
= √ 5 × 10 × 15
= √ 750
= √ 5 × 5 × 3 × 10
= 5 √30 cm².
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