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The brainliest answer you are looking for is 48cm2
30
I DONT KNOW BUT THAT'S MY ANSWER HOPE IT HELP
Answer:
Johnny is wrong.

Step-by-step explanation:
Johnny is wrong.
A better definition would be:
is the set of all elements that belong to at least one A or B.
So, the elements that belong to both A and B, like c and d in this exercise, also belong to
.
So:
