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evablogger [386]
3 years ago
10

Help anyone can help me do this question,I will mark brainlest.​

Mathematics
2 answers:
nika2105 [10]3 years ago
7 0

Answer:

Hello,

Step-by-step explanation:

Using\ the\ Pythagorian's\ theorem,\\\\EC^2=EA^2+AC^2\\\\=EA^2+AB^2+BC^2\\\\=3*5^2\\\\EC=5\sqrt{3} \approx{8,660...}

harkovskaia [24]3 years ago
4 0

side of cube=5

We know

\boxed{\sf Side=\dfrac{Diagonal}{\sqrt{2}}}

\\ \sf \longmapsto Diagonal =sude\times \sqrt{2}

\\ \sf \longmapsto Diagonal=5\sqrt{2}

\\ \sf \longmapsto Diagonal=5\times 1.4

\\ \sf \longmapsto Diagonal=7cm

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