Which is the most accurate way to estimate 34% of 19?

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.

Which spreadsheet would be used to compute the first nine terms of the geometric sequence a^n=32•(1/2)n-1

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?