Area Calculator
Select a shape and enter its dimensions to calculate the area.
Area Formulas
Frequently Asked Questions
What is the area of a rectangle 12 × 8?
A = 12 × 8 = 96 square units.
How do I find the area of a right triangle with legs 6 and 8?
A = (base × height) / 2 = (6 × 8) / 2 = 24 square units. The hypotenuse would be √(6²+8²) = √100 = 10 (3-4-5 scaled by 2).
What is the area of a circle with diameter 10?
Radius = diameter / 2 = 5. A = π × 5² = π × 25 ≈ 78.54 square units.
| Shape | Formula |
|---|---|
| Square | A = s² |
| Rectangle | A = l × w |
| Circle | A = πr² |
| Triangle | A = ½ × b × h |
| Trapezoid | A = ½(b₁ + b₂) × h |
| Ellipse | A = πab |
| Parallelogram | A = b × h |
