Question

the area of a square is 420cm. what is the length of the diagonal

Answer 1

$\bf\large\underline\pink{Answer:-}$

d =28.98

Answer 2

Answer:

Side = √area = √420 = 20.49 cm

by pythagoras theorem. ...

then diaginal = √{(20.49)²+(20.49)²}= √840 = 28.99 cm answer

Hope it helps......