side of a triangal are in the ratio 3:4:5 perimeter = 144 find area
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Answered by
2
Answer:
Let say sides are 3x,4x,5x
Perimeter =144
12x=144
x=12
Sides a=36 b=48 c=60
s=a+b+c/2=72
Area=root(s)(s-a)(s-b)(s-c)
=root72*36*24*12
=6*6*24
=864 unit^2
Arvindjai003:
thnx
Answered by
0
Answer:
let the side of triangle is = 3x +4x +5×
= 12x
the perimeter is given so,
12x = 144
x = 12
sides are ;-
3x = 3×12
= 36
4x = 4× 12
= 48
5x = 5× 12
= 60
'
S = 36 + 48 + 60/2
S = 144/2
= 72
where s is semiperimeter.
area of triangle =
=
hope it will help you......
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