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3 years ago

The volume of a sphere is 3,000π m3. What is the surface area of the sphere to the nearest square meter?

1 answer:

8 0

First, solve for the radius of the sphere using the volume and the equation,
V = 4πr³ / 3
Substituting for the known values,
3000π m³ = 4πr³/3
The value of r from the equation is approximately 13.10 meters. The equation for the surface area is,
SA = 4πr²
Substituting the value of radius,
SA = 4π(13.10 m)² = 2157.74 m²
Therefore, the surface area is approximately 2157.74 m².

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2 years ago

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Answer:

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Step-by-step explanation:

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2 years ago

Can you guys help please im so confused

marissa [1.9K]

Answer:

a) see below

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Step-by-step explanation:

Write down what you know:

- The area of the enclosure is length*width, so

$A = x \cdot y$

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$2y + x = 80$

Now we have to combine these two equations above, and get rid of y in the process.

First rewrite the second as:

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Then substitute for y in the first:

$A = x (40 - \frac12 x) = 40x - \frac12x^2$

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2 years ago

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Answer:

2 dimes, 1 nickel and 3 quarters.

Step-by-step explanation:

The price of 2 postcards is $1. Any combination of coins that adds to $1 will work here. Remember, a penny is worth 0.01, a nickel is worth 0.05, a dime is worth 0.10, and a quarter is worth 0.25.

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3 years ago