Question

If the length of a diagonal of a square is 20cm, them its perimeter is.

Answer 1

Answer:

40√2 cm

Step-by-step explanation:

Diagonal of a square is given by the formula:- a√2

Here, 'a' refers to side of a square

According to the question,

⇒ a√2 = 20 cm

⇒ a = 20 / √2 = 10√2 cm

Hence Side of Square is 10√2 cm.

Now Perimeter of a square is 4 times the side of the square.

⇒ Perimeter = 4a

⇒ Perimeter = 4 × 10√2 cm

⇒ Perimeter = 40√2 cm

Hence the Perimeter of the square is 40√2 cm.

Hope it helped !!

Answer 2

Answer:80

Step-by-step explanation:

If diagnol is 20 then the side will also be 20

Perimeter of square=4s

=4*20

=80

Therefore perimeter is 80

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