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gladu [14]
2 years ago
14

A spherical ball has a radius of 12 cm. The cost to cover the sphere is $0.05/cm^2. The total cost to cover the ball is:

Mathematics
1 answer:
Umnica [9.8K]2 years ago
7 0

Answer:

Step-by-step explanation:

surface area of sphere=4πr²=4π×12²=576π

≈576×3.1416

≈1809.5616 cm²

cost to cover=1809.5616×0.05=$90.47808≈$90.48

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<h3>Answer:</h3>

C. The playable area has a width of 9 inches and a height of 6 inches.

<h3>Explanation:</h3>

There are a number of ways you can get there.

1. Check the answers to see which have the right area and aspect ratio.

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3. You can write equations for width and height and solve.

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Substituting w=3/2·h into the second equation gives

... (3/2)h·h = 54

... h² = 36 . . . . . multiply by 2/3

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the algebraic expression would be;

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