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Tems11 [23]
2 years ago
5

GEOMETRY- FIND POLYGON AREA

Mathematics
1 answer:
Dvinal [7]2 years ago
5 0

Answer:

Step-by-step explanation:

The area of a regular polygon is

A=\frac{1}{2}ap where a is the apothem and p is the perimeter. Perimeter is simple: just count the number of sides the polygon has and multiply it by 3 (the length of one side).

p = 3(9) is 27 inches for the perimeter.

We have what we need now to find the area:

A=\frac{1}{2}(4.1)(27) and

A=\frac{1}{2}( 110.7) so

A = 55.35 square inches

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Point S is reflected about the x-axis in the coordinate plane and then rotated 90°
VikaD [51]

Answer:

D. S’ is the result of switching coordinates of S.

Step-by-step explanation:

Transformation is the movement of a point from its initial location to a new location. Type of transformation are translation, reflection, rotation and dilation.

If a point A(x, y) is reflected along the x axis, the new point is A'(x, -y). If a point A(x, y) is rotated 90°  counterclockwise about the origin, the new point is A'(-y, x).

Let us assume that S is at (x, y). Hence, if point S is reflected about the x-axis in the coordinate plane to get (x, -y). If it is then rotated 90°  counterclockwise about the origin, the new point is at  S'(y, x). S’ is the result of switching coordinates of S

8 0
3 years ago
What is the measure of ?
Elenna [48]

Answer:

B or C

Step-by-step explanation:

Measurement is the assignment of a number to a characteristic of an object or event, which can be compared with other objects or events. ... This system reduces all physical measurements to a mathematical combination of seven base units. The science of measurement is pursued in the field of metrology.

5 0
4 years ago
5/9 x 2/6 in simplest form please answer asap
Damm [24]
The answer would be 5/27
(If you want me to explain I can)

Hope this helps

Have a great day/night
8 0
3 years ago
Help me solve this problem pleaseeeeee
antiseptic1488 [7]

Answer:

y>6

Step-by-step explanation:

Simplify so 5y-2(y)-2(4)>10

3y-8>10

3y>18

y>6

7 0
3 years ago
WUHAHAHAHHAHAH HELP ME<br><br><br><br>​
Nat2105 [25]

Answer:

1. 201.06 m

2. 1963.5 dm

3. 4536.46 mm

4. 17671.46 in

5. 254.47 cm

Step-by-step explanation:

You just have to plug these numbers into the formula for area of a circle.

6 0
3 years ago
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