The side of a triangular plot are in the ratio of 3:5:7 and it's perimeter is 300. find its area
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Answered by
16
Answer:
3x+5x+7x=300
15x=300
so,X=300/15=20
now,
3x=3*20=60
5x=5*20=100
7x=7*20=140
Answered by
22
Ratio is 3 : 5 : 7
Assume
Sides are
3p , 5p and 7p
Hence,
Perimeter of Triangle = 300m
Then,
3p + 5p + 7p = 300
15p = 300
p = 20
Therefore,
3p = 3 × 20 = 60m
5p = 5 × 20 = 100m
7p = 7 × 20 = 140m
Now,
Semi Perimeter of Triangle
Area of ∆
→ Area = 1500√3 m²
Therefore ,
Area of ∆ is 1500√3 m²
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