10 by 30 is the average size of a rectangular home garden.
I believe your thinking circumference. Perimeter refers to rectangular shapes. The circumference of an average Saab 9 3 = 53.4 inches, with an average diameter of 17 inches.
The average diameter of a standard issue basketball from the NBA is 29.5 inches. This gives it an inner diameter on average of 18 inches.
The average diameter of llama fiber is 30 to 40 micrometers.
An average dwarf galaxy is small in diameter.
No, the atomic mass is the average mass of the atom and the atomic diameter is the average diameter of the atom
The average diameter of Earth is 12735 km.
it is 32cm in diameter
The average diameter of a hurricane is 300 miles.
About 100 light-years in diameter.
The average diameter of a dwarf spheroidal galaxy is 10 kiloparsecs.
Mercury has the smallest diameter and the largest average density.