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Shkiper50 [21]
2 years ago
6

Please answer for me

Mathematics
1 answer:
solong [7]2 years ago
6 0
It should equal 12.56
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(05.03)Calculate the area of the regular pentagon below: A regular pentagon with side length of 22.3 inches and dotted line from
Marat540 [252]

Answer:

The area of the regular pentagon is A=858.55\ in^{2}

Step-by-step explanation:

we know that

The area of a regular polygon is equal to

A=\frac{1}{2}Pa

where

P is the perimeter of the regular polygon

a is the apothem

Find the perimeter P

P=5(22.3)=111.5\ in ----> the regular pentagon has five equal sides

a=15.4\ in ---> distance from center to middle of side

substitute

A=\frac{1}{2}(111.5)(15.4)

A=858.55\ in^{2}

5 0
3 years ago
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I need the answer to this please
damaskus [11]

Answer:  the answer is D, if you just graph it in the Desmos graphing calculator you can solve it easily

5 0
2 years ago
Lynn is going to cover the floor with tiles.
Vlada [557]

Answer:

Please check explanations

Step-by-step explanation:

Firstly, we calculate the area of the floor

That is the product of the sides

= 300 * 540 = 162,000 cm^2

What is left is to calculate the area of a tile

Since the tile is also rectangular, the area of each tile will be;

60 * 30 = 1,800 cm^2

Since we have both areas, we can now get the number of tiles needed to cover the floor

We can get this by dividing the area of the floor by the area of a tile

This is;

162,000/1,800 = 90

This means that 90 tiles will cover the floor

The cost of a tile

is £4.25

The cost of 90 tiles will be ;

£4.25 * 90 = £382.5

from here, we can see that the £400 is more than £382.5

So we can conclude that she has enough to spend on tiles

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3 years ago
If a digital player costs $425 after a 15% discount what was the original cost?
11Alexandr11 [23.1K]
$488.75 Make 15% into a decimall and add it to 425
8 0
3 years ago
How do you write the expression as an angle sin42cos17-cos42sin17
kap26 [50]
Sin(a+b)=sin(a)cos(b)+cos(a)sin(b).
Let a=42 and b=17 so sin(42+17)=sin59.
8 0
3 years ago
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