a triangle of side 12cm 5cm 13cm find the perimeter​

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a triangle of side 12cm 5cm 13cm find the perimeter​

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Thu Nguyệt 3 years 2021-08-31T13:35:25+00:00 1 Answers 13 views 0

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  1. quangkhai
    0
    2021-08-31T13:36:40+00:00
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    Answer:

    Given, the sides of a triangle are 5cm,12cm and 13cm

    semi−perimeter = a+b+c/2

    s= (5+12+13)/2

    s= 30/2

    s=15cm

    Area of the triangle (according to the Heron’s Formula)

    = s(s−a)(s−b)(s−c)

    = 15(15−5)(15−12)(15−13)

    = 15(10)(3)(2)

    = 900

    =30cm ^2 .

    Step-by-step explanation:

    Hope it is helpful….

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