Artificial/ man-made radiation
1 answer:
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9514 1404 393
Answer:
(3) 16
Explanation:
The diagonal sides are each the hypotenuse of a triangle with sides 3 and 4, so they are √(3²+4²) = √25 = 5 units long. The horizontal sides are 3 units long, so the perimeter is ...
2(5 +3) = 16 units
