Question

The length of the side of a triangle are a=9cm,b=12cm and c=16cm. Is it right-angled triangle?

Answer 1

Answer:

a2 + b2 = c2

9square + 12square = 16square

81 + 144 is not equal to 256

Therefore, it is not a right angled triangle

Answer 2

Answer:

No it is not a right angled triangle

Step-by-step explanation:

if it is a right angled triangle then, [a^2+b^2=c^2] but the value of c is not satisfying the above equation. If it is a right angled triangle and the value of a=9cm and b=12cm then the value of c must be 15cm (i.e c^2=b^2+a^2)

c^2= 12^2+9^2

c^2= 144+81

c^2=225

c=√225

c=15 cm