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Umnica [9.8K]
3 years ago
10

A sphere has a radius of 3 centimeters. What is the volume of the sphere?

Mathematics
2 answers:
iris [78.8K]3 years ago
6 0

Answer:

Volume = 113.1 cubic cm

Step-by-step explanation:

Volume = \frac{4}{3} \pi r^3 = \frac{4}{3} \pi 3^3 = 4 \pi \times 9 = 36 \pi=113.1 cm^3

bogdanovich [222]3 years ago
6 0

Answer:

i think it's Volume = 113.1 cubic cm

Step-by-step explanation:

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Answer:

1) 11\sqrt{3}

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3) 20\sqrt{3}  + 15\sqrt{2}

4) 53 + 12\sqrt{10}

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6) 7\sqrt{2}  - 5\sqrt{3}

Step-by-step explanation:

1) 2\sqrt{12} + 3\sqrt{48} - \sqrt{75}

=(2 × 2\sqrt{3} )+ (3 × 4\sqrt{3}) - 5\sqrt{3}

= 4\sqrt{3} + 12\sqrt{3} - 5\sqrt{3}

= 11\sqrt{3}

2) 4\sqrt{8} -2\sqrt{98} + \sqrt{128}

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= 5× 2\sqrt{3} - 3×3\sqrt{2} + 4×6\sqrt{2} + 2×5\sqrt{3}

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= 20\sqrt{3}  + 15\sqrt{2}

4) (2\sqrt{2}  + 3\sqrt{5} )^{2}

= 8 + 12\sqrt{10} + 45

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5) (1+\sqrt{3} ) (1-\sqrt{3} )

= 1 - 3

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6) (2\sqrt{6} -1) (\sqrt{3} -\sqrt{2}  )

= 2\sqrt{18}-2\sqrt{12}  -\sqrt{3}  +\sqrt{2}

= 2×3\sqrt{2} - 2×2\sqrt{3} - \sqrt{3} + \sqrt{2}

= 6\sqrt{2}  - 4\sqrt{3} -\sqrt{3} +\sqrt{2}

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Hope the working out is clear and will help you. :)

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2 years ago
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\bf f(x)=y=ln(x)\qquad 
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