Geometry Flashcard

Front

What is the formula for the circumference of a circle?

Back

C = 2πr, where C is the circumference and r is the radius.

Front

What is the formula for the area of a circle?

Back

A = πr², where A is the area and r is the radius.

Front

What is the formula for the volume of a sphere?

Back

V = \frac{4}{3}πr³, where V is the volume and r is the radius.

Front

What is the formula for the surface area of a cylinder?

Back

SA = 2πr² + 2πrh, where SA is the surface area, r is the radius, and h is the height.

Front

What is the value of π (pi) approximately?

Back

π ≈ 3.14.

Front

How do you find the radius if you know the circumference?

Back

r = \frac{C}{2π}, where C is the circumference.

Front

How do you find the radius if you know the area of a circle?

Back

r = \sqrt{\frac{A}{π}}, where A is the area.

Front

What is the relationship between diameter and radius?

Back

Diameter (d) = 2 × Radius (r).

Front

What is the formula for the area of a rectangle?

Back

A = length × width.

Front

What is the formula for the volume of a rectangular prism?

Back

V = length × width × height.