Question
The length of one diagonal of a rhombus is 80% of the other diagonal . The area of the rhombus is how many times the square of the length of the other diagonal ?
Answer: Option B
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`d_1 = (80/100 xx d_2)`
`hArr d_1 = (4d_2)/(5)`
Area of rhombus = `1/2 d_1 d_2 = ( 1/2 xx (4d_2)/(5) xx d_2) = 2/5 (d_2)^2`.
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