Question

the length of the diagonal of a square is 20cm.
find its area
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Answer 1

area=1/2*20*20

area=10*20

area=200 cm^2

Answer 2

Answer:

by pythagoras theorem,

h^2=b^2+p^2

=)(20)^2=x^2+x^2

=)400cm=2x^2

=)400/2=x^2

=)x=

$\sqrt{100}$

=10 cm

Hence,area of square=10×10 cm^2

=100cm