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3 years ago

What is the length of the unknown side?

Mathematics

1 answer:

Alisiya [41]3 years ago

8 0

Answer:

B)20 Units is the answer for it

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A fountain, 3 ft in diameter, sits in the center os a circular duck pond. The pond measures 3 ft from the fountain to its edge.

umka2103 [35]

Answer:

$56.55\ ft^2$

Step-by-step explanation:

We know that the diameter of the fountain is 3 feet and that it is in the center of the pond.

We know that the area of a circumference is:

$\pi(r)^2$

where r is the radius of the circumference.

further

d = 2r

Where d is the diameter of the circumference.

Then the radius $r_1$ of the source is 1.5 ft.

The radius $r_2$ of the pond is 1.5 + 3 = 4.5 ft

Finally the area of the pond is equal to the area of the ring that is shown in the image

$A = \pi(r_2)^2 - \pi (r_1)^2\\\\A = \pi(4.5)^2 - \pi(1.5)^2\\\\A = \pi(4.5^2 - 1.5^2)\\\\A = 18\pi = 56.55\ ft^2$

5 0

3 years ago

Worth 15 points with give brainiest if correct please help

valkas [14]

Answer:

looks like its 4

Step-by-step explanation:

7 0

3 years ago

Question Progress<br> Decrease £250 by 15%

balandron [24]

Answer:

215 i guess

Step-by-step explanation:

8 0

3 years ago

1.2 x 10^-1 in decimal form

mafiozo [28]

Answer:

0.12x is the answer

Brainliest please :)?

Step-by-step explanation:

7 0

3 years ago

Help please with #3

Alenkasestr [34]

Answer: x = 2a over b + c

Step-by-step explanation:

1. Multiply both sides by two. This cancels out 2 and turns a into 2a. It should look like 2a = bx + cx

2) Since both b and c have x’s, we turn it into (b + c)x

3. Then divide both sides by b+c to get 2a over b + c = x

6 0

3 years ago