Question

In a rhombus ABCD, length of each side is 10 cm and angle A is 60°. Find the length
of its diagonal AC. (V3 = 1.73)
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Answer 1

Answer:

${ac}^{2} = {ab}^{2} + {bc}^{2} \\ ac \: is \: diogonal \: of \: rhombus \: \\ \\ {d} = \sqrt{ {10}^ {2} + {10}^{2} } \\ d = \sqrt{100 + 100} \\ d = \sqrt{1000} \\ d = 10 \sqrt{10}$