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pav-90 [236]
3 years ago
8

A rectangle is 12cm long and 9cm wide . calculate the length of the diagonal​

Mathematics
2 answers:
Serhud [2]3 years ago
8 0

Answer: 15

Step-by-step explanation:

d = \sqrt{l^2+w^2}

Substitute in values:

d = \sqrt{12^2+9^2}\\d = \sqrt{144+81}\\d = \sqrt{225}\\d=15

<em>Hope it helps <3</em>

Shalnov [3]3 years ago
4 0

Answer: 15 centimeters

Step-by-step explanation: You cut the rectangle into two triangles following the diagonal. You add 12 squared (144) and 9 squared (81) together. You get 225. You get the square root of 225 which is 15 and that is your answer. Basic solving for the hypotenuse.

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