2nd ques please give me full detailed anwer...
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Let the sides be 3x,4x & 5x.
Perimeter = 3x+4x+5x
144 = 12x
x = 12
Therefore the side are,
3x = 3(12) = 36cm (a)
4x = 4(12) = 48cm (b)
5x = 5(12) = 60cm (c)
Using Heron’s formula,
s = perimeter/2 = 144/2 = 72cm
Area = √[s(s-a)(a-b)(s-c)]
A = √[72(72-36)(72-48)(72-60)]
A = √72x36x24x12
A = √746496
A = 864cm²
Your answer is 864cm²
Perimeter = 3x+4x+5x
144 = 12x
x = 12
Therefore the side are,
3x = 3(12) = 36cm (a)
4x = 4(12) = 48cm (b)
5x = 5(12) = 60cm (c)
Using Heron’s formula,
s = perimeter/2 = 144/2 = 72cm
Area = √[s(s-a)(a-b)(s-c)]
A = √[72(72-36)(72-48)(72-60)]
A = √72x36x24x12
A = √746496
A = 864cm²
Your answer is 864cm²
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