How do i find the elements in the set o. o

All you do is combine the elements that sets D and E have in common. in this case, the only two values in the set will be 8 & 11, because those are the only two numbers that can be found in both set D and set E!!

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A)26•2=52there are 2 sides with the same length116-52=64the other 2 side have to be half of 64 each64/2=32the width is 32b)make two sentences about these steps because your teacher knows how you write and explain things.