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kondaur [170]
3 years ago
11

Calculate the area of the regular pentagon below:

Mathematics
2 answers:
Neko [114]3 years ago
8 0

Answer:

532.4 in²

Step-by-step explanation:

The area (A) of the regular pentagon is calculated as

A = 0.5 × perimeter × apothem

Perimeter = 5 × 17.6 = 88 in

The apothem is the segment from the centre to the midpoint of one of the sides.

Here the apothem = 12.1 in, thus

A = 0.5 × 88 × 12.1 = 44 × 12.1 = 532.4 in²

Anna [14]3 years ago
3 0

Answer:

1064.8 in^2

Step-by-step explanation:

12.1 x 17. 6 / 2 to find one half of a triangle will equal 106.48

there are 10 triangle therefore 106.48 x 10 = 1064.8

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3 years ago
Calvin is 3 years younger than Robert. Which expression below represents how old Calvin is if Robert is y years old? A. y – 3 B.
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Answer:

A Y-3

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We know Robert is Y years old and Calvin is 3 years younger.  Y-3.  For example, Robert is 20, then Calvin would have to be 17.  Y=20.  20-3 = 17

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Solve -7/2=-28 please solve and show work
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Step-by-step explanation:

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3 years ago
Does the following infinite series converge or diverge? 1/3+2/9+4/27+8/81
Norma-Jean [14]

Answer:

converge

Step-by-step explanation:

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8 0
2 years ago
Read 2 more answers
What is the sum of the first 50 terms of the series 2 + 17 + 32 + 47+ ...?​
Alex

Answer:

\huge\boxed{18,475}

Step-by-step explanation:

The terms of this sum make the arithmetic sequence.

The fomula of a sum of <em>n</em> terms of an arithmetic sequence:

S_n=\dfrac{[2a_1+(n-1)d]\cdot n}{2}

We have

a_1=2\\d=17-2=32-12=47-32=15\\n=50

Substitute:

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3 0
3 years ago
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