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dangina [55]
3 years ago
6

The rectangle has rotational symmetry of order

Mathematics
2 answers:
nataly862011 [7]3 years ago
7 0

Answer:

The rectangle has rotational symmetry of order = 2

The rectangle's rotational symmetry occurs for angles of 90 degrees.

Helga [31]3 years ago
3 0

Answer:

2

180 and 360

Step-by-step explanation:

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a door with width 4.20 m has an arc as shown in diagram .Find: a) radius of the arc B) length of the arc to the nearest cm
EastWind [94]

Answer:

Ok, we know that the width of the door is 4.20m.

Then, if the arc is at the top of the door, we will have that the diameter of that "half circle" will be equal to the width of the door.

Then the diameter of the arc is 4.20m

And the radius is defined as half of the diameter, so we have:

radius = 4.20m/2 = 2.10m

And we can write this in cm (because the probelm ask for it)

1m = 100cm

then 2.10m = 2.1*100cm = 210cm

Now, we know that the perimeter of a circle is:

P = 2*pi*r

where pi = 3.14

Then the perimeter (or arc) of half a circle will be half of that:

Arc = (2*pi*r)/2 = pi*r

and r = 210cm, pi = 3.14

Arc = 3.14*210cm = 659.4cm

4 0
3 years ago
Answer this question for me please:)
igor_vitrenko [27]

Answer:

d)20

Step-by-step explanation:

4+4+6+6=20

Hope this helps! Have a great day ahead. Tell me if im wrong :) Stay Safe <3

6 0
2 years ago
Read 2 more answers
What is the decimal representation of 2/ 10
kondor19780726 [428]
To represent 2/10 it can be 0.20 or 0.2
3 0
3 years ago
Start at 1000 create a pattern that subtracts 8 from each number. Stop when you have 5 numbers
kifflom [539]
Well, you do 1000-8 then put your answer down.
Answer is 992
Then do 992-8
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Then do 968 -8
Answer is 960

Your final answers are 992,984,976,968,960.
7 0
3 years ago
The right isosceles triangle PQR has vertices P(3, 3), Q(3, 1) and R(x, y) and is rotated 90 degrees counterclockwise about the
Jlenok [28]
For the answer to the question above, since the triangle is isosceles, the two legs have equal length. The coordinates of two vertices are given
P(3,3)
Q(3,1)
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d = √[(3-3)² + (3-1)²
d = 2
Therefore, the coordinates of P is
(5,1)
7 0
3 years ago
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