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3 years ago

Please help :) find the area of the regular polygon

Mathematics

1 answer:

viva [34]3 years ago

8 0

9514 1404 393

Answer:

3√3 square units

Step-by-step explanation:

The area of a regular n-sided polygon with radius r is given by the formula ...

A = (n/2)r²·sin(360°/n)

For n=3 and r=2, the area is ...

A = (3/2)(2²)·sin(360°/3) = 6·sin(120°) = 6(√3/2)

A = 3√3 . . . . square units

_____

<em>Alternate solution</em>

The center of this polygon is the centroid, which divides each median into parts with the ratio 2:1. This means the given radius is 2/3 of the height of the triangle. The base of the triangle is 2/√3 times the height, so is ...

b = (2/√3)(3) = 2√3

The area using these dimensions is calculated as ...

A = 1/2bh

A = 1/2(2√3)(3) = 3√3 . . . . square units

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Answer:

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Step-by-step explanation:

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3 years ago

What operation do u use to find the cost of a drink and a popcorn for one person?

Ber [7]

Answer:

Alright let's do this.

First Rewrite the question:

What operation do u use to find the cost of a drink and a popcorn for one person? 

Ok when solving you need to take Maria's name and only use first letter.

I am just going to show the you how to do the question.

________________________________________________________

P= Popcorn (Cost: $8.00)

D= Drink (Cost: $5.00)

M (Maria) = $8 + $5 = (Answer)

F (Her Friend) = $8 + $5 = (Answer)

A quick way to solve to find the total cost for 2 people.

8 x 2 = 16

5 x 2 = 10

The total cost that Maria has to pay for her and her friend is $26.00.

The operation used is Addition or Multiplication.

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Hope this helps! Have a great day!

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2 years ago