The area of a square is 144 sq cm. Find the length of its diagonal

Assessment: JAMB UTME - Mathematics - 2007 Subject: General Mathematics

Question 1 Report

The area of a square is 144 sq cm. Find the length of its diagonal

11

\sqrt{3}

cm

12cm

12

\sqrt{2}

cm

13cm

Answer Details

BD = $\sqrt{x^{2} + x^{2}}$
= $\sqrt{12^{2} + 12^{2}}$
= $\sqrt{144 + 144}$
= 2(144)
= 12 $\sqrt{2}$ cm

Read lesson note on Areas (WAEC)

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