Area & Circumference of Circles + Vocab.

Front

Red line: radius or diameter?

Back

Radius

Front

Diameter?

Back

16

Front

Distance across a circle through the center:

Back

diameter

Front

Circumference definition?

Back

Distance around a circle.

Front

Symbol name?

Back

pi

Front

Approx. value of this sign?

Back

3.14

Front

Formula for area of a circle?

Back

A = π·r²

Front

In the formula A = π·r², what does r represent?

Back

radius

Front

Area of the circle?

Back

200.96 cm²

Front

Formula for circumference of a circle with diameter?

Back

π*d