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the lengrh of side of a triangle are in the ratio 3:4:5 and perimeter =144 cm /square find no.1 area of a triangle no.2 hieght corresponding of longest side

Posted by Yash Agrawal 8 years, 6 months ago

CBSE > Class 09 > Mathematics

1 answers

Sanskar Sourabh 8 years, 6 months ago

Let the length of sides be 3x,4x&5x Perimeter=144 3x+4x+5x=144 12x=144 x=12cm 3x=3×12=36 4x=4×12=48 5x=5×12=60 Semi-perimeter(s)= a+b+c/2 Clac by herons formula. Area of∆= 1/2 × base × height Put value u ll get ans.

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CBSE > Class 09 > Mathematics