Question

what is the length of a diagonal of a sqare of side 10 cm​

Answer 1

Answer:

h = diagonal

h² = b² + p²

h² = (10)² + (10)²

h² = 100 + 100

h² = 200

$h = diagonal= 10 \sqrt{2} cm$

Answer 2

Answer:

by Pythagoras

H2=(side)²+(side)²

H2= 2(side)²

h2=2×(10)²

H2=200

H=√200

h= 10√2