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A marble has a radius of 10 millimeters. Find its a. volume and b. surface area. Use 3.14 for π. Round the answers to the nearest hundredth.

User Siur
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Final answer:

The volume and surface area of a marble with a 10 mm radius are approximately 4186.67 mm³ and 1256.00 mm², respectively, using 3.14 for π and rounding to the nearest hundredth.

Step-by-step explanation:

Calculating Volume and Surface Area of a Marble

To find the volume and surface area of a marble with a radius of 10 millimeters using 3.14 for π (pi), we first use the formula for the volume of a sphere, which is 4/3 πr³. By plugging in the radius (r = 10 mm), we get:

Volume (V) = 4/3 × 3.14 × (10 mm)³

Calculating this gives us:

V = 4/3 × 3.14 × 1000 mm³

V = 4186.67 mm³

Next, to find the surface area of the marble, we use the formula for the surface area of a sphere, which is 4 πr². Plugging in the radius again gives us:

Surface area (A) = 4 × 3.14 × (10 mm)²

A = 4 × 3.14 × 100 mm²

A = 1256 mm²

After rounding both values to the nearest hundredth, we have the results:

Volume: 4186.67 mm³ → 4186.67 mm³

Surface area: 1256 mm² → 1256.00 mm²

The actual calculation might yield more precise numbers due to more digits in π, but as we're using 3.14 and rounding to the nearest hundredth, these are the approximate results.

User Bjakubski
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