Area, Volume & Surface Area

Shape Selection & Parameters

Calculation Steps & Results

💡 Essential Geometric Formulas

• Sphere Volume & Surface Area: $V = \frac{4}{3}\pi r^3$, $S = 4\pi r^2$
• Cylinder & Cone Volume: Cylinder is $V = \pi r^2 h$, Cone is $V = \frac{1}{3}\pi r^2 h$
• Trapezoid Area: $S = \frac{(a + b) \times h}{2}$ ($a$: top base, $b$: bottom base, $h$: height)
• Pi Value: This calculator uses high-precision value of $\pi \approx 3.14159265$.