Determine the 5th term in geometric sequence whose first term is 4 and whose common ratio is 3

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.

Find measure angle 1 and measure angle 3 in the kite the diagram is not drawn on the scale

At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?