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STALIN [3.7K]
3 years ago
12

Ariel is filling a giant ball with air. The radius of the beach is 30cm. What is the volume of air that the beach ball will hold

Mathematics
1 answer:
Harman [31]3 years ago
7 0

Answer:

The volume of the air that the beach ball will hold is 113,142.85 cm³.

Step-by-step explanation:

Sphere:

  • It is a three dimension shape.
  • It has a center.
  • Volume= \frac43 \pi r^3, r is the radius of it.
  • Surface area= 4πr².

Given that,

Ariel is filling a giant ball with air.

The ball is sphere in shape.

The volume of air = The volume of the ball.

The radius of the beach ball is 30 cm.

The volume of the ball is \frac 43 \pi r^3

                                      =\frac43 \pi (30)^3 cm³

                                      =36,000π cm³

                                      =113,142.85 cm³

The volume of the air that the beach ball will hold is 113,142.85 cm³.

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gtnhenbr [62]

Answer:

(4w^2+180w+1800) meters^2

Explanation:

(60+2w) x (30+2w)

1800+120w+4w^2+60w

Combine like terms and rearrange into quadratic equation

4w^2+180w+1800

Don't forget to put your units and since we are talking about area be sure to add your squared symbol

8 0
3 years ago
Which of these expressions is not equivalent to the others?
just olya [345]
Normally You would need to simplify all of them, to see what their values are like.

Already from the start, however, we can see that 9n + 3 + 2 and 9n + 11 isnt the same value. Based on this, we should only need to simplify one of the other, to get either 9n + 5 or 9n + 11.

Lets pick the upper one.

(4n + 3) + 5n + 8 - 6
4n + 3 +5n + 2
9n + 5.

This indicated that 9n+11 is the odd one.

To make sure, we can solve the next one:
(4n + 5n) + (3 + 8 - 6)
9n + 5
Which indicated the same thing.

9n+11 is the "outsider", which means:

9n + 11 is the correct answer for this task.

4 0
3 years ago
Maria is setting up a 20gal salt water fish tank. That needs to have a salt content of 3.5% . if she has water with 2.5% salt an
Natalka [10]
X + y = 20   ---> x = 20 - y

2.5x + 3.7y = (3.5)(20) = 70

--> 2.5(20-y) + 3.7y = 70

--> 50 -2.5y +3.7y = 70

--> 1.2y = 20

--->  y = 16.66

Answer: 16.66 gallons
3 0
3 years ago
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RSB [31]

Answer:

AB + BC = AC

BC = AC - AB

5x + 6 = 37 - (2 x + 3) = 37 -2 x - 3 = 34 - 2 x

7 x = 34 - 6 = 28

x = 4

BC = 5 x + 6 = 5 * 4 + 6 = 26

Check:

AB = 2 x + 3 = 2 * 4 + 3 = 11

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3 0
3 years ago
5. The shaded area is 327, find r.
vfiekz [6]

Answer: 10.2

Step-by-step explanation:

Area of a circle is

A= pixr^2

327= 3.14r^2

Divide by 3.14

= 104.14

Get the sq rat of 104.14

= 10.2

3 0
4 years ago
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