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Why This Matters for Nursing: Calculating wound surface area, determining body surface area (BSA) for chemotherapy dosing, or understanding the volume of fluid in containersβgeometry has real healthcare applications.
Perimeter = "Perimeter walks the border" (around the edge)
Area = "Area fills the inside" (square units because you're covering a surface)
Volume = "Volume fills the box" (cubic units because you're filling 3D space)
For rectangles: P = 2L + 2W, A = L Γ W
| Measurement | Rectangle | Square |
|---|---|---|
| Perimeter | P = 2L + 2W | P = 4s |
| Area | A = L Γ W | A = sΒ² |
| Measurement | Formula |
|---|---|
| Perimeter | P = a + b + c (all sides) |
| Area | A = Β½ Γ base Γ height |
| Measurement | Formula |
|---|---|
| Circumference | C = 2Οr = Οd |
| Area | A = ΟrΒ² |
| Shape | Volume |
|---|---|
| Rectangular prism (box) | V = L Γ W Γ H |
| Cube | V = sΒ³ |
| Cylinder | V = ΟrΒ²h |
Ο β 3.14 (or use 22/7)
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