Question

if a side of a square is a, why its diagonal is root 2 a?​

Answer 1

Step-by-step explanation:

it's simple Pythagoras theorem

consider the square abcd

take right triangle ADC

Pythagoras theorem:a²+b²=hyp²

AD²+DC²=AC²

Here, AC is diagonal

the side of the square is a. so,

a²+a²=AC²

2a²=AC²

√2a=AC

I am little bad at explaining but hope you understand and it helps you and if it does help you please mark as brainliest!!