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CBSE Class 9 Answered

The sides of triangular park in ratio of 2:6:7 and it perimeter is 300m.  Then its area is 

 

Asked by kumarvsteel477 | 12 Sep, 2019, 08:22: AM
Expert Answer
Ratio of sides=2:6:7
Let the sides be 2x, 6x and 7x
Perimeter of triangle=300m
2x+6x+7x=300
x=20m
So, the sides are 40m, 120m and 140m
S e m i p e r i m e t e r equals s equals 300 over 2 equals 150 m
Area of the triangle is
increment equals square root of s open parentheses s minus a close parentheses open parentheses s minus b close parentheses open parentheses s minus c close parentheses end root
equals square root of 150 open parentheses 110 close parentheses open parentheses 30 close parentheses open parentheses 10 close parentheses end root
equals 900 square root of 55 space m squared
Answered by Renu Varma | 12 Sep, 2019, 09:44: AM
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