Help with the last question plss.

Plz ! what is the volume of this pyramid? with numbers of 30cm 14cm 18cm

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2

Abus travels 36 miles in 45 minutes. enter the number of miles the bus travels in 60 minutes at this rate.