Question

5. If length of a diagonal of a squre is 20cm
then its perimeter is​

Answer 1

Answer:

perimeter of square=(n)2

=(20)2

=40

Answer 2

Answer:

diagonal = side(root(2))

20=s(root2)

s=20/root2

rationalize the denominator

s= 10(root2)

perimeter= 4s

=4*10(root2)

=40(root2)

hope it is clear

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area of first square: ar of 2 square

(s1)²:(s2)²

(d1/root(2))²:(d2/root(2))²

(d/root2)²:(2d/root2)²

(d²/(root2)²):((2d)²/(root2)²)

(d²/2):(4d²/2)

d²:4d²

1:4

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