Find the length of the diagonal of a rectangle whose sides are 21 cm and 20 cm
Answers
Answered by
2
Answer:
29tep-by-step explanation:
Two right-angled triangle made their by diagonal and we can use pythagoras theorem to find out the diagonal
Answered by
2
Answer: 29 cm
Step-by-step explanation:
We can use Pythagoras theorem: (all the angles in a rectangle is 90 degrees)
21^2 + 20^2 = diagonal^2
441 + 400 = 841
diagonal^2 = 841
diagonal = 29 cm
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