The area of a square is 444 sqcm Find the lengt... - JAMB Mathematics 2007 Question
The area of a square is 444 sqcm. Find the length of the diagonal.
A
12\(\sqrt{2}\) cm
B
11\(\sqrt{3}\)cm
C
13 cm
D
12 cm
correct option: a
Area S2 = 144sqcm
s = \(\sqrt{144}\) = 12 cm
Length of diagonal = \(\sqrt{12^2 + 12^2}\)
= \(\sqrt{144}\) + 144
= \(\sqrt{228}\)
= 12\(\sqrt{2}\)cm
s = \(\sqrt{144}\) = 12 cm
Length of diagonal = \(\sqrt{12^2 + 12^2}\)
= \(\sqrt{144}\) + 144
= \(\sqrt{228}\)
= 12\(\sqrt{2}\)cm
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