Pre-Calc H Geometry Formulas to Memorize

Unit 4.6- Related Rates

**Squares:**

Area of a Square: A=s2

Perimeter of a Square: P=4s

Volume of a Square: V=s3

Surface Area of a Square: SA=6a2

**Circles:**

Area of a Circle: A=𝝿r2

Circumference of a Circle: C=2𝝿r

Diameter: D=2r

Radius: r=1/2d

**Triangles:**

Area of a Triangle:1/2bh

Pythagorean Theorem(Right Triangles Only): C2=A2+B2

**Cones:**

Volume of a Cone: V= 1/3𝝿r2h

**Cylinders:**

Lateral Area(doesn’t include top or bottom): LA=2𝝿rh

Surface Area(Does include top or bottom): SA=2𝝿rh+2𝝿r2

Volume: V=𝝿r2h

**Spheres**

Surface area of a sphere: SA=4𝝿r2

Volume of a Sphere: V=4/3𝝿r3