Question
One of the diagonals of a rhombus is double the other diagonal its area is 25 sq. cm . The sum of the diagonals is :
Answer: Option C
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`1/2 d_1 xx 2d_1 = 25`
`hArr d_1^2 = 25`
`hArr d_1 = 5`
`:.` Sum of length of diagonals = (5 + 100) = 15 cm.
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