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Virty [35]
3 years ago
11

An element with a mass of 630 grams decays by 30% per minute. To the nearest minute, how long will it be untill there are 30 gra

ms of the element remaining?
Mathematics
1 answer:
nataly862011 [7]3 years ago
6 0

Answer:

It should take somewhere between 8 to 9 minutes to decay until there are 30 grams remaining.

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Fencing How much fencing is required to enclose a circular garden whose radius is 28 ​m? Use 3.14 for . About nothing m of fenci
Andru [333]

Answer:

175.84 m

Step-by-step explanation:

Given that:

A circular garden which has a radius of 28 m.

\pi = 3.14

To find:

The fencing required to enclose the circular garden ?

Solution:

Here, we are given a circle and its radius.

We are required to find the perimeter of the circle in order to find the fencing required to enclose the circular garden..

Formula for finding the perimeter of a circle is:

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where r is the radius of the circle.

Using the given values in the formula:

Perimeter = 2\times 3.14 \times 28 = <em>175.84 m</em>

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3 years ago
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Answer:

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Step-by-step explanation:

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check the picture below

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