Find the area of the shaded region.
use 3.14 for pi. Round to the hundredths if necessary.

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

How to do this , and can some one explain

Which statement describes surface features called maria on the moon