Question

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Answer 1

perimeter = 4 a = 32 => side = 8m

diagonal c = 10m    to find other diagonal d.      Then area = c d / 2

cost of painting both sides = 2 * (c d / 2) * 5   Rs

In a Rhombus,    c² + d² = 4 a²           and                c² - d² = 4a² cos Ф

                   so d² = 4 * 8² - 10²  = 156      d = 2 √39  m

Cost = 100 √39  Rs.

Answer 2

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