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2 years ago

The radius of a spherical balloon is 4.5 inches.

Mathematics

2 answers:

nignag [31]2 years ago

7 0

Answer:

Hello there! Your answer should be 381.51.

Step-by-step explanation:

This is the formula for volume: V = $\frac{4}{3}\pi \r^{3}$ r^3

Now in order to solve you will first insert what you know. In this case, insert the radius, and pi:

$= \frac{4}{3} \pi (4.5)^{3}$

Remember, the radius is cubed so it will be 4.5 x 4.5 x 4.5

$= 91.125$

Now! You will be able to simply multiply cross. I personally multiply the 4 by my new radius and divide that by 3 like show:

$= \frac{4}{3} \pi (91.125)\\\\= \frac{364.5}{3} \\\\$

Your final answer should be:

$= 381.51$

Hope this was helpful! ^^

Natalka [10]2 years ago

4 0

Answer:

The volume of the balloon is 18.84 inches³

Step-by-step explanation:

* Lets talk about the sphere

- Its a solid

- It has surface area = 4πr²

- It has no lateral area

- It has no faces

- It has no vertices

- It has no edges

- Its volume = (4/3) π r³

* In our problem the balloon shaped a sphere

- Its radius = 4.5 inches

- The value of π = 3.14

* Lets calculate its volume

∵ The radius = 4.5 inches

∵ π = 3.14

∵ The volume = (4/3) π r³

* Substitute the values of r and π in the formula

∴ The volume = (4/3) × 3.14 × 4.5 = 18.84 inches³

* The volume of the balloon is 18.84 inches³

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Answer:

1. 40%

2. The theoretical probability is 3% greater than the experimental probability.

Step-by-step explanation:

We are informed that a number cube is rolled 20 times and the number 4 is rolled 8 times. The experimental probability of rolling a 4 is;

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The experimental probability of obtaining at least one tails, one or more tails, is represented in mathematical notation as;

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The above events are mutually exclusive, thus;

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Answer:

The integers are (x, y) = (40, 8).

Step-by-step explanation:

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Answer:

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