Question

A triangle whose sides are 15cm, 36cm, and 39cm is

(a) Right angled
(b) Equilateral
(c) Isosceles
(d) None of above​

Answer 1

Given sides are 15,36,39  

So if 15²+36²=39² then it is a right angled triangle..

15²+36²=225+1296=1521

39²=1521

HERE hypotenuse²=side²+side²

so it is a right angled triangle.

Answer 2

Answer:

Please refer to the attachment...

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