Can u solve for me because this is confusing and i don’t get the e

Which of those sequences is a geometric sequence

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

Helll ! 1,400 tons of wheat of two different varieties was delivered to the silo. when processing one variety, there was 2% of waste and 3% during the processing of the second variety of wheat. after the processing, the amount of remaining wheat was 1,364 tons. how many tons of each variety of wheat was delivered to the silo?