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Mensuration (Area)

Surface Area

Shape Formula
Square Length x Width
Rectangle Length x Width
Triangle 1/2 x Base x Height
Parallelogram Base x Height
Trapezium 1/2 x (Base Length + Top Length) x Height
Circle Πr 2

r = radius

Other surface areas

Shape Formula Description
Cube 6 x Length x Width It consists of six square surfaces with same area.
Cuboid (2 x Height x Width) + (2 x Height x Base) + (2 x Base x Width) Three pairs of rectangle where each pair of triangles have same area.
Cylinder (solid) 2Πr 2 + 2Πr x height of the cyclinder
Cone (solid) Πr 2 + Πrl l is the slant height
Sphere 4Πr 2

 r = radius

Mensuration – Area (Questions)

  1. How long is the side of a cube if the surface area is 600cm2?
  2. What is the surface area of a sphere if the radius is 0.7cm?

Mensuration – Area (Answer)

  1. 10cm
  2. 6.16cm2

About Dr Loo - O-level & JC H2 math tutor

I am Dr Loo, a PhD holder with 8 years of teaching experience on secondary school and tertiary level specialize on mathematics and statistics. In addition, I also received teaching training under tertiary setting. Furthermore, I have published 5 research papers on international peer reviewed journals. If you are currenlty looking for mathematics tuition in Singapore, I do provide O-level Math Tutoring & JC Math Tutoring (H1 Math Tuition Class & H2 Math Tuition Class).

Thus, for those who are looking for a JC Math Tutor (H1 Math tutor or H2 Math tutor) as well as O-level Math Tutor, you may contact me for my math tuition in Singapore. I can be contacted through SMS/Whatsapp/Telegram at +65-85483705.

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O-level Math & JC Math Tuition Singapore - Surface Area
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