5. ABCD is a rhombus. The lengths of its diagonals AC and BD are 8 cm and
6 cm respectively. Find each side of the rhombus.
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Given ABCD is a rhombus. Hence, AB = BC= CD = DA.
Given, AC = 8 cm and BD = 6 cm.
Since, ABCD is a rhombus, the diagonals AC and BD will be perpendicular bisectors. Hence, AE = EC = 4 cm and BE = ED = 3 cm.
Now, we know that,
AEB = BEC = CED = DEA = 90°
So, in the triangle AEB, AE= 4 cm, BE = 3 cm and AEB = 90°
By Pythagoreas Theorem,
AE^2 + BE^2= AB² = 42 + 32 = 16+ 9 = 25
AB^2 = 25
→ AB = 5 cm
Hence, the sides of the rhombus are of length 5 cm.
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