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8th grade formulas
volume, surface area, area, perimeter
Question | Answer |
---|---|
perimeter of a rectangle | 2L+2W or 2(b+h) |
perimeter of a square | 4s |
perimeter of a triangle | a+b+c |
Area of a circle | 3.14xr^2 |
area of parrallelagram | bh |
area of a rectangle | bh |
area of a square | s2 or bh |
area of a triangle | 1/2bh |
area of a trapazoid | 1/2h(b1+b2) |
volume of a prism | Bh |
volume of a rectangular prism | Bh or LWH |
volume of a cube | Bh or LWH or S^3 |
Volume of a cylinder | Bh or 3.14r^2h |
Volume of a pyramid | 1/3bh |
volume of a cone | 1/3bh or 1/3x3.14r^2h |
Volume of a sphere | 4/3x3.14r^3 |
Surface area of a prism | 2B+ph |
Surface area of a rectangular prism | 2B+ph |
Surface area of a cube | 2B+ph |
Surface area of a cylinder | 2x3.14r^2+2x3.14rh |
surface area of a regular pyramid | B+1/2pe |
Surface area of a cone | 3.14r^2+3.14rp |
Surface area of a sphere | 4x3.14r^2 |