The diameter of a sphere is 2 1/4mm. Find the radius.
Remember, the diameter is twice the radius. (Equivalently, the radius is 1/2 the diameter)
1 1/8
To find the radius of a sphere, you can use the formula:
Radius = Diameter / 2
Given that the diameter of the sphere is 2 1/4 mm, we need to convert this mixed number to an improper fraction.
2 1/4 can be expressed as (2 * 4 + 1) / 4 = 9/4.
Now, substitute the value of the diameter in the formula:
Radius = 9/4 mm / 2
Next, divide the numerator (9) by the denominator (4):
Radius = 9/4 mm รท 2 = 9/8 mm.
Therefore, the radius of the sphere is 9/8 mm.