Area, SM-Bank 134

A kite has an area of \(32\ 240\) square centimetres. Given that one of the diagonals has a length of 124 centimetres, calculate the length of the other diagonal. (2 marks)

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\(520\ \text{cm}\)

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\(\text{Let the unknown diagonal}=x\)

\(A\)	\(=\dfrac{1}{2}xy\)
\(32\ 240\)	\(=\dfrac{1}{2}\times 124\times x\)
\(62x\)	\(=32\ 240\)
\(x\)	\(=\dfrac{32\ 240}{62}\)
	\(=520\ \text{cm}\)