The sides of a triangular plot are in the ratio of 3:5:7 and its perimeter is 300m . Find its area
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Answers
Answer:
Step-by-step explanation:
The sides of a triangular plot are in the ratio of 3:5:7 and its perimeter is 300m . Find its area.
★ Given:-
Ratio of sides of a triangular plot= 3:5:7
Perimeter = 300m
★ Assumption:-
Let the ratio of sides, 3:5:7 be 3x, 5x and 7x, also be a,b,c respectively.
Perimeter(s)= a+b+c
Also, We will use Heron's Formula, which is:
Perimeter = a+b+c
3x+5x+7x = 300
15x= 300
x= 20
Substituting x=20 in the ratios:
3x= 320=60m
5x= 520=100m
7x= 720=140m
S=
S= =150
Now it's time to find the area!
=
is the area of the triangular plot.
Answer:
1500√3m^
Step-by-step explanation:
Given:-
===>Ratio sides of triangular pot = 3:5:7
===>Perimeter = 300m
Let the ratio of sides ,3:5:7 be 3x:5x:7x also be a ,b,c
Formula:-
Solution:-
Perimeter = a + b+ c
===> 3x+5x+7x = 300
===>15x = 300
===>x = 20
===>3x = 3 ×20 = 60m
===>5x = 5 × 20 = 100m
===>7x = 7 × 20 = 140m