Basketball vs Smartphone: size comparison
Basketball: 24.2 cm. Smartphone: 14.7 cm. Both silhouettes are drawn at the same scale.
Size ratio: ×1.6
Basketball
24.2 cm
What is measured Diameter of a size 7 basketball
Its regulation circumference is 75 to 78 cm.
Source : Wikipedia — Basketball (ball)
Smartphone
14.7 cm
What is measured Height of a smartphone with a 6.1-inch screen
Screen size is measured diagonally: 6.1 inches is about 15.5 cm.
Source : Wikipedia — Smartphone