Answer:
Lunar eclipses
The only shape that casts a round shadow no matter which direction it is pointed is a sphere, and the ancient Greeks deduced that this must mean the Earth is spherical.
Explanation:
The volume V of a pyramid is one-third the area of the base B times the height h.
volcanoes are formed by eruptions of lava and ash when magma rises through cracks or weak spots
a is the answer 100% vertically
B!
This is correct on Edgunity 2021