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perimeter of a semi- circle with a radius of 6cm.

What is the greatest common factor of 8 and 36

In the diagram of circle a what is m

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is