The sides of a triangle are in the ratio 3:5:7 and perimeter is 300m. Find its area (using herons formula) answer full question
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Step-by-step explanation:
let the common in the sides :x
3x,5x,7x
perimeter of triangle= sum of all sides of triangle
300m=3x+5x+7x
300m=15x
300/15=x
20=x
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Answered by
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Answer:
2595m2
Step-by-step explanation:
let the sides of the triangular plot be 3x,5x and 7x
=3x+5x+7x=300
15x=300
x=20
therefore the side of the plot are
3x=3(20)=60m
5x=5(20)=100m
7x=7(20)=140m
Now,let a=60;b=100;c=140
s=60+100+140/2=150m
Area of plot=✓s(s-a)(s-b)(s-c)
✓150(150-60)(150-100)(159-140)
✓150x90x50x10
✓15x10x9xx10x5x10x10
10x10x3✓15x5
300✓3x5x5
300x5✓3
1500✓3m2
1500x1.73
2595m2
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