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Question included in picture

Question included in picture-example-1

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Answer:


  • 20√(3) units²

=======================

Given

  • Three sides of the triangle, 7, 10 and 13 units.

To find

  • Area of the triangle

Solution

Use Heron's formula:


  • A = √(s(s-a)(s-b)(s-c)), where s is semi-perimeter
    s=(a+b+c)/2

Find the value of s:

  • s = (7 + 10 + 13)/2 = 30/2 = 15

Substitute and calculate the area:


  • A = √(15(15-7)(15-10)(15-13)) = √(15*8*5*2) =√(1200) =20√(3)

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