Question

 Find the length of the diagonal of a square with side 10 cm.​

Answer 1

Step-by-step explanation:

Formula = a² = b²+c²

a²= 10² +10²

a² = 200

a =√200

a = 10√2

Answer 2

Answer:

The side of square is 10 cm

In right angled △ABD

AB^2 +AD^2=BD^2

[according to Pythagoras theorem]

(10)^2+(10) ^2=BD^2 $

100+100=BD^2

BD^2 =200

BD=10√ 2 cm

∴ Diagonal of square =10√2 cm.