Find the area of rhombus with side 14 cm and altitude 5.2cm.If one of its diagonal is 15 cm long. Find the length of its other diagonal.
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Area of rhombus = base*altitude
Area of rhombus= 14*5.2 =72.8 sq.cm
Area of rhombus = 1/2*d1*d2 where d1 and d2 are the lengths of the two diagonals.
Therefore, area=1/2*15*d2
72.8=1/2*15*d2
=> d2= 145.6/15
d2= 9.70 cm
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