What’s on the Surface Area poster
A 4-row table: Solid · Formula · Faces.
Surface area is the total area of every face. A net makes them all visible at once.
- Cube — 6s² — 6 identical squares
- Rect. prism — 2lw + 2lh + 2wh — 3 pairs of matching rectangles
- Triangular prism — 2(½bh) + 3 rectangles — 2 triangles, 3 rectangles
- Cylinder — 2πr² + 2πrh — 2 circles + 1 rolled rectangle
The cylinder's rectangle has width equal to the circumference. That is where 2πrh comes from.
Questions about the Surface Area poster
- What’s on the Surface Area poster?
- A 4-row table: Solid · Formula · Faces. Surface area is the total area of every face. A net makes them all visible at once. Cube — 6s² — 6 identical squares; Rect. prism — 2lw + 2lh + 2wh — 3 pairs of matching rectangles; Triangular prism — 2(½bh) + 3 rectangles — 2 triangles, 3 rectangles; Cylinder — 2πr² + 2πrh — 2 circles + 1 rolled rectangle. The cylinder's rectangle has width equal to the circumference. That is where 2πrh comes from.
- Who is the Surface Area poster for?
- Surface Area is filed under 7th Grade (ages 12–13), so it matches what that year asks a child to remember. It is equally useful to an older student revisiting math, and to the parent or teacher answering the question at the kitchen table.
- When should you use the Surface Area poster?
- Sketch the net first. Counting faces on a drawing of a 3D shape is where faces go missing. A wall chart earns its place by being glanceable from where the work is happening, so Surface Area belongs on the wall where that math work actually happens, within glancing distance, rather than filed away.
- What other posters go with Surface Area?
- Similar Figures, Volume of Prisms and Cylinders and Angle Pairs sit alongside Surface Area in the 7th Grade set. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Similar FiguresVolume of Prisms and CylindersAngle Pairs
- Is the Surface Area poster free to download and print?
- Yes. Surface Area downloads as a free PDF with no account, no email and no watermark, like everything else in the 7th Grade set. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Surface Area poster print at?
- Surface Area is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Surface Area loses nothing.Printing guide
Related posters
Charts that sit alongside Surface Area on the same wall.
Browse every 7th Grade poster, or start from the full catalogue.