a triangular plot of land has dimensions 3 1/4 metres , 2 1/4 metres and 3 1/2 metres.... find the perimeter of the triangular plot
please answer I have 20 points and I will mark you as brainliest... please answer fast
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Answer:
4.68
Step-by-step explanation:
side of ∆plot of land
a=31/4. a=7.75
b=21/4. b=5.25
c=31/4 . c=15.5
semi perimeter of triangle =(a+b+c)/2
= (7.75+5.25+15.5)/2
=20.75
area of ∆plot root=[s(s-a)( s-b )( s-c )]
= [ 20.75 (20.75-7.75)(20.75-5.25)
(20.75-15.5)]
=[20.75(13)(25.5)(5.25)
=20.75*1057.875
= ✓21,950
=4.68
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