Diagonal

Calculate the diagonal length of the rectangle ABCD with sides a = 8 cm, b = 7 cm.

Correct answer:

u =  10.6 cm

Step-by-step explanation:

$$\begin{gathered} u^2=a^2+b^2 \\ u=\sqrt{a^2+b^2}=\sqrt{8^2+7^2}=10.6\text{ cm} \end{gathered}$$

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Math student

THANKS FOR YOUR HELP

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