'Rust: modify values in Vec with other values in Vec

Given this code:

let sides = vec![2, 3, 8];

let area = sides
    .iter()
    .map(|x| x) // how can i access other members of sides here?
    .sum::<u32>();

println!("area: {}", area);

Assuming sides is filled with values representing width, height, and length, how can I modify the .map() line to length * width, width * height, and height * length?

Playground available here.

rust

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'Rust: modify values in Vec with other values in Vec

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