Radius of an atom from the edge length of a simple cubic unit cell

The same question, asked 2 times: 2 May 2023 S2*, 9 May 2024 S2. Every wording below, oldest first.

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Question 1
2 May 2023 S2
81 $Calculate the radius of an atom of metal if it forms simple cubic unit cell with edge length 380 pm.$
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Question 2
9 May 2024 S2
75 $Find the radius of metal atom in simple cubic unit cell having edge length 334.7 pm?$
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