PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoIn earlier classes, we have learnt how to find the surface area of the basic solids such as cube, cuboid, cone, cylinder, sphere and hemisphere.
Let us recall the formulas to find the surface area of the solids mentioned above.
Solid | Figure | Total Surface Area (TSA) (in square units) | Curved Surface Area (CSA) or Lateral Surface Area (LSA) (in square units) | Formula description |
Cube |  | \(6a^2\) | \(4a^2\) | \(a\) - side |
Cuboid |  | \(2(lb + bh +lh)\) | \(2h(l + b)\) | \(l\) - length \(b\) - breadth \(h\) - height |
Cone |  | \(\pi r (l + r)\) | \(\pi r l\) | \(r\) - radius \(l\) - slant height \(l = \sqrt{r^2 + h^2}\) \(h\) - height |
Cylinder |  | \(2 \pi r (h + r)\) | \(2 \pi r h\) | \(r\) - radius \(h\) - height |
Sphere |  | \(4 \pi r^2\) | \(4 \pi r^2\) | \(r\) - radius |
Hemisphere |  | \(3 \pi r^2\) | \(2 \pi r^2\) | \(r\) - radius |
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