Question

Find the area of a triangle whose sides are 8cm 15cm and 17cm respectively

Answer 1

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Answer 2

Hey!

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Using herons formula :-

= a+b+c ÷ 2

= 8 + 15 + 17 ÷ 2

= 40 ÷ 2

= 20

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•Area of triangle by herons formula :-

= √s(s-a) × (s-b) × (s-c)

= √20(20-8) × (20-15) × (20-17)

= √20 × 12 × 5 × 3

= √2^4 × 3² × 5²

= √2 × 2 × 2 × 2 × 3 × 3 × 5 × 5

= 2 × 2 × 3 × 5

= 60

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