Question

how to solve this??
please show solved process

Answer 1

the answer is [3]and (1)
according Pythagoras Theorem
1)2.5^2+6^2=6.5
6.25+36=42.25
3)1.5^2+2^2=2.5^2
2.25+4=6.25
these two are Pythagoras triplets
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Answer 2

this can be solved by solving the option to see that they are Pythagorean triplets or not. By Pythagoras theorem we can get,
(hypotenuse or largest side) ²=(base)²+(height) ²
LHS=6.5²=42.25 and
RHS=6²+2.5²=42.25
therefore the first option is Pythagorean triplet so it is a right angled triangle