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geometry ch. 12
geo
| Question | Answer |
|---|---|
| L.A. surface area of prism | 3(L x W) |
| T.A surface area of prism | L.A.+ 2( B x H) |
| L.A. Surface area of pyramid | 4( 1/2 x B x Slant height) |
| T.A. surface area of pyramid | L.A. + area of base |
| regular pyramid | the base is a regular polygon, lateral faces are isos triangle |
| L.A. cylinder | circle x H or 2∏r × H |
| T.A. cylinder | L.A.+ 2∏r² |
| L.A. cone | ½×❍×L |
| T.A. cone | L.A. +∏r² |
| T.A. sphere | 4∏r² |
| volume of rectangular box | L × W × H |
| volume of prism | area of base × H |
| volume of cylinder | B × H or ∏r²×H |
| volume of pyramid and cone | ⅓(B×H) |
| base of equilateral ∆ | (s²∕4)×√3 |
| area of cross section | ⊄∕B=(V₁/H) |
| volume of sphere | ⁴⁄₃∏r³ |