Ballpark — April 12, 2026

Episodes of "The Joy of Painting" with Bob Ross

403 episodes

Ran for 31 seasons.

About how tall is the average adult woman in the US?

~162 cm

Average adult female height in the US is around 5'4".

About how long is a standard wooden pencil?

~19 cm

A typical pencil is about 7.5 inches long.

About what is the diameter of a tennis ball?

~6.7 cm

A tennis ball is a bit under 3 inches across.

About what is the diameter of a ping-pong ball?

~40 mm

Modern table tennis balls are about 40 mm in diameter.