Question

length of the longest that can be kept in a square room of 20cm​

Answer 1

Answer:

Answer is 20√2 cm

Step-by-step explanation:

length of the longest side is the diagonal of the square. We know that all sides of square are equal . therefore, longest side will be the hypotenuse

h^2= p^2 + b^2

= 20^2 + 20^2 cm

= 400 + 400 cm

= 800 cm

h = √800 cm

h = √400×2 cm

h = 20√2 cm