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AlladinOne [14]
2 years ago
5

A circular pond is to be surrounded by a fence.The radius of the pond is 3.2 m.How many meters of fence is needed to enclose the

pond?
Mathematics
1 answer:
Gemiola [76]2 years ago
4 0

Answer:

≈ 20 m

Step-by-step explanation:

the circumference (C) of a circle is calculated as

C = 2πr ( r is the radius ) , then

C = 2π × 3.2 = 6.4π ≈ 20

length of fence needed is approximately 20 m

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2 years ago
Oliver has 3 times as many rocks in his collection as Katie. Then Oliver collected 75 more rocks and Katie collected 105 more ro
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Answer:

The answer to your question is Katie had 15 rocks and Oliver 45 rocks.

Step-by-step explanation:

Conditions

Katie has x amount of rocks

Oliver has 3x amount of rocks

The final amount of rocks

                                    Oliver = 3x + 75

                                     Katie = x + 105

Now, they have the same amount of rocks, then we can equal both equations

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Solve for x

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                                             x = 15

Conclusions

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