Which equation should be used to find the volume of the figure? CU
8 in
10.in
A in
6 in
O V-(61418)
O V-3(61418)
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what is the answer to this

large crystals result from very slow cooling.

evaporation of water: this would produce an evaporite which is a sedimentary rock. like a salt pan in a desert. not possible to have volcanic rocks originate this way.

crystalization in molten earth: slow cooling over time. (hundreds to millions of years)

crystalization at earth's surface: this results in fast cooling. (a few hours to a few months or years)

crystalization from cooling off hot water: that would be a hydrothermal deposit. while associated with volcanics they are not volcanic rocks themselves and usually occur fairly rapidly.

umm you say your want to . but you do know that this is the mathematics.  

o~o