Answer:
23.383 is the exact area and 23.4 would be rounded to the nearest tenth.
Explanation:
They have less-runny lava, meaning that it doesn't travel as far before cooling, meaning that the layers build up more steeply, but don't go out as far. You also get layers of ash on the composite volcano to help build it up too
Soil liquefaction occurs when the ground vibrates to the point where the soil acts like liquid