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Arc length / 2πr = angle measure of arc / 360
degree / 360 = radian / 2π
Area of circle= πr*
Population Density= # of people/ area of land (πr*)
Area of sector / πr* = angle measure / 360 (part/whole)
Area of a trapezoid= 1/2 x height x (base1 + base2)
Area of parallelogram= Base x height
Area of rhombus/kite= 1/2 x diagonal1 x diagonal 2
Central Angle of regular polygon in a circle= 360/n
Area of a regular polygon= 1/2 x Apothem x Perimeter
Area of square= s*
Are of Triangle= 1/2 b x h
Dimensions= height, base, width, length
Perimeter= sum of side lengths
*= squared
Principles of cell theory are that all living things are made of cells, cells are the smallest living unit, all cells arise from pre-existing cells and spontaneous generation is false
cells are small because of efficiency since a small cell has less work for material to reach center while large cell has more work for material to reach center
prokaryotic cell is the first cell type on earth, in bacteria and flagella (archae), no nucleoid, no membrane bound organisms
Shapes are corcus which is round, spirillum which is spiral, bacillus which is rod
Arrangements are diplomatic which is pair, staphylococcus which is cluster, street which is chain
Eukaryotic cell includes fungi, protists, plants, and animals; membrane bound nucleus
plants have chloroplasts, cell wall, and one large vacuole
Animals have no cell wall, many small vacuoles, centrioles
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