SAT Math · Chapter Test
Area and Perimeter — 25-Question Test
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Formula Reference Sheet
This chapter
Area
| Rectangle | length × width |
|---|---|
| Triangle | ½ × base × height |
| Trapezoid | ½(b₁ + b₂) × height |
| Circle | πr² |
Perimeter
| Rectangle | 2(length + width) |
|---|---|
| Square | 4 × side |
| Circle (circumference) | 2πr |
Digital SAT reference
Area & Circumference
| Circle area | A = πr² |
|---|---|
| Circle circumference | C = 2πr |
| Rectangle | A = ℓw |
| Triangle | A = ½ b h |
Volume
| Rectangular box | V = ℓwh |
|---|---|
| Cylinder | V = πr²h |
| Sphere | V = 4⁄3 πr³ |
| Cone | V = 1⁄3 πr²h |
| Pyramid | V = 1⁄3 ℓwh |
Right triangles
| Pythagorean theorem | a² + b² = c² |
|---|---|
| 30°–60°–90° | sides x : x√3 : 2x |
| 45°–45°–90° | sides s : s : s√2 |
Constants
| Degrees in a circle | 360° |
|---|---|
| Radians in a circle | 2π |
| Angles of a triangle | sum = 180° |
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