The circumference of the lamp shade is 57 inches.
Given : A lamp shade has a radius of 9 inches.
To find : The circumference of the top of the shade
Solution : A lamp shade is in a sphere form,
So, formula to find the circumference of sphere is
Now, the radius of lamp is 9 inches and
Substitute the value in the formula we get,
Round to nearest whole number circumference is 57 .
Therefore,The circumference of the lamp shade is 57 inches.