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Jlenok [28]
2 years ago
8

The radius of a semicircle is 3 kilometres. What is the semicircle's perimeter?

Mathematics
1 answer:
alina1380 [7]2 years ago
6 0

Answer:

In terms of Pi: 3\pi + 6 km

Exact value (rounded): 15.42477 km

Approximated (3.14): 15.42 km

Step-by-step explanation:

Hello!

A semicircle's perimeter can be found using the formula: P = \pi r + 2r

We can plug in the values to solve for the perimeter.

<h3>Solve</h3>
  • P = \pi r + 2r
  • P = \pi(3)+ 2(3)
  • P = 3\pi + 6

In terms of Pi, it is 3\pi + 6,

Exact value of Pi, it is 15.42477

Approximation of Pi (3.14), it is = 15.42

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Answer:

The amount of money due to Beth-Ann at the end of this period​ is $27, 300.

Step-by-step explanation:

The amount at the end of a period, when simple interest is being charged is:

Amount (A) = Principal (P) + Interest (I)

Here interest is computed using the formula:

I=P\times R\times T

It is provided that:

P = 24,000

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Compute the Interest as follows:

I=P\times R\times T

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The interest earned is, <em>I</em> = $3,300.

Compute the amount of money due to Beth-Ann at the end of this period​ as follows:

A=P+I

   =24000+3300\\=27300

Thus, the amount of money due to Beth-Ann at the end of this period​ is $27, 300.

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