Circle Properties and Measurements

Flashcards covering the properties of circles involving pi, radius, diameter, circumference, and area based on lecture notes.

Circumference of a circle with radius 1

The measurement calculated as $1 \times 2\times \text{pi}$, which equals $2\times \text{pi}$.

Circumference of a circle of diameter 1

The measurement equal to $\pi$ (or $1\pi$) calculated as $1 \times \pi$.

Area of a circle of radius 1

A geometric measure that equals $\pi$.

Area of a circle of diameter 1

A geometric measure that equals $0.25 \times \pi$, calculated by halving the diameter to find a radius of $0.5$.

Circumference of Anna's pool

The boundary measurement of $200\text{ feet}$ given to determine the pool's area and backyard space.