If the length of the diagonal of a square is 20cm,then its perimeter must be a. 402 cm b. 302 cm c. 10cm d. 15 2 cm

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Accepted Answer

We know that d=√2s Given diagonal = 20 cm => s = 20/ 2 cm Therefore, perimeter of the square is 4s = 4 x 20/ 2 = 40 …

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