High School

Blood sugar levels are measured in milligrams of glucose per deciliter of blood volume. If a person's blood sugar level measured 128 mg/dL, what is this in grams per liter?

The radius of a sphere is 15.0 cm. What is the volume of the sphere in cm\(^3\) and in m\(^3\)?

Answer :

Blood sugar levels are measured in milligrams of glucose per decilitre of blood volume. If a person's blood sugar level measured 128mg/dL.

A blood sugar level of 128 mg/dL is equivalent to 0.128 g/L.

The radius of a sphere is 15.0 cm. The volume of the sphere is 0.014137166 m³.

To convert blood sugar level from milligrams per deciliter (mg/dL) to grams per liter (g/L), we need to convert both the unit of volume and the unit of mass.

Converting mg/dL to g/L:

Since 1 gram (g) is equal to 1000 milligrams (mg) and 1 liter (L) is equal to 10 deciliters (dL), we can use these conversion factors to convert the units:

1 mg/dL = 0.001 g/L

Therefore, to convert 128 mg/dL to g/L, we multiply it by the conversion factor:

128 mg/dL * 0.001 g/L = 0.128 g/L

So, a blood sugar level of 128 mg/dL is equivalent to 0.128 g/L.

Calculating the volume of a sphere:

The formula for the volume of a sphere is given by:

Volume = (4/3) * π * radius³

Radius = 15.0 cm

Substituting the value into the formula, we get:

Volume = (4/3) * π * (15.0 cm)³

Volume = 14137.166 cm³

Converting cm³ to m³:

Since 1 meter (m) is equal to 100 centimeters (cm) and 1 cubic meter (m³) is equal to 1,000,000 cubic centimeters (cm³), we can use these conversion factors to convert the units:

1 cm³ = 1 x 10⁻⁶ m³

Therefore, to convert 14137.166 cm³ to m³, we multiply it by the conversion factor:

14137.166 cm³ * (1 x 10⁻⁶ m³/cm³) = 0.014137166 m³

So, the volume of the sphere is approximately 14137.166 cm³ or 0.014137166 m³.

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