3 sides of a triangle are in the ratio of 3:5:7 and the perimeter of this triangle is 150cm find the area of triangle​

Question

3 sides of a triangle are in the ratio of 3:5:7 and the perimeter of this triangle is 150cm find the area of triangle​

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Quinn 1 month 2021-08-16T13:50:47+00:00 1 Answer 0 views 0

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    2021-08-16T13:52:20+00:00

    Step-by-step explanation:

    a+b+c=perimeter

    3x+5x+7x=180

    15x=180

    x=180/15

    x=12

    semi perimeter=3*12+5*12+7*12/2=75

    area=√s(s-a)(s-b)(s-c)

    √(75) (75-36) (75-60) (75-54)

    √75*39*15*21

    √5*5*3*3*13*3*5*3*7

    5*3*3√13*5*7

    45√455

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