Question

a difference between the semi perimeter and the side of a triangle ABC are 8 cm 7 cm and 5 cm respectively find the area of the triangle​

Answer 1

Answer:

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Answer 2

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Let the semiperimeter = x

Side A's difference = 8 cm

Side B's difference = 7 cm

Side C's difference = 5 cm

Side A = x+8 cm

Side B = x+7 cm

Side C = x+5 cm

Now ,

x = (x+8+x+7+x+5)/2

x = 3x+20/2

2x = 3x+20

-x = 20

x= -20

But the semiperimeter can't be in negative.

Now Area of ∆ABC :

= 74.8331477 cm² = 74.833 cm² Approximatel

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