find the length of the diagonal of a rectangular whose sides are 21 cm and 20 cm.
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Answer:
Step-by-step explanation:
diagonal of rectangle can be find using Pythagoras theorem.
diagonal square = 21 rest to 2 + 20 rest to 2
diagonal square = 441 + 400
diagonal square = 841
diagonal = square root of 841
diagonal = 29
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