Question

HOW IS IT NOT 16 SOMEONE HELP

Answer 1

18.7 units

Explanation:

Diagonal² = 1² + 1²

= 2

`\sf diagonal = √(2) = 1.41\\`

Perimeter = 3 + 3 + 9 *1.41

= 3 + 3 + 12.69

= 18.7 units