Question

the sides of some triangle are given below find out which ones are right angled triangles?
1)1.5,1.6,1.7
1)40,20,30

Answer 1

$1) \sqrt{ {1.5}^{2} + {1.6}^{2} } \\ = 2.19 \\ not \: a \: right \: a ngled \: trianle$
$2) \sqrt{ {20}^{2} + {30}^{2} } \\ = 36.05 \\ not \: a \: right \: anged \: triangl e$

Answer 2

(1.5×1.5)+(1.6×1.6)=1.7^2
2.25+2.56 =2.89
4.81 is not equal to rhs
hence this is not a right angled triangle


(20*20)+(30*30)=40*40
400+900 = 1600
1300 is not equal to right hand side therefore this is not angled triangle