How do you write 283,980 in expanded form

Find the value of a. the diagram is not to scale. a quadrilateral is drawn. the upper and lower sides are parallel. the interior angle in the upper left corner is labeled a degrees. the angle in the upper right corner is labeled 113 degrees. the angle in the lower right corner is labeled b degrees. the angle in the lower left corner is labeled 36 degrees. a. 36 b. 144 c. 54 d. 126

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16