You spelled it correctly in your question.
The correct spelling of the term is "diameter" (the width of a circle, sphere, or planet).
You spell it orbiting.You spell it orbiting.You spell it orbiting.You spell it orbiting.You spell it orbiting.You spell it orbiting.
If you are trying to spell musician that is how you spell it.
You spell it 'certain'.
you spell it "UNIQUE"
This is how you spell it pretty
No. Earth (diamater 12,756km) is much larger than Mars (diamater 6,787km).
the answer is 1,391,000 kilometers
142,987 kilometers long
It has no effect at all
9,654,798,325
3.5 inches
A circumference of 78.54m
3.142
6.5 inches in diamater.
approximately 28.26 cm2
circumference = pi*4.6
113.1 square cm