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mote1985 [20]
3 years ago
7

The shape below is an equilateral triangle. a) Does the shape have rotational symmetry? If so, identify the angle of rotation. b

) Does the shape tessellate?The image shows an equilateral triangle." i really need help to find this out
Mathematics
1 answer:
blsea [12.9K]3 years ago
4 0

Answer:

Below.

Step-by-step explanation:

a) An equilibrium  does have rotational symmetry.

The angle of rotation is 120 degrees .

It has Rotational  symmetry of order 3.

b) It does tessellate because the angle in the triangle divides exactly into 360 : 360 / 60 = 6.

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Identify the surface area of the composite figure in terms of π.
Katena32 [7]

Answer:

  78π m²

Step-by-step explanation:

The lateral area of the cylinder is ...

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  LA = 2π(3 m)(8 m) = 48π m²

The lateral area of one cone is ...

  LA = πrh . . . . where h is the slant height

  LA = π(3 m)(5 m) = 15π m²

Then the total surface area of the figure is the area of the two cones plus that of the cylinder:

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  S = 78π m²

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lakkis [162]

Answer:

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Step-by-step explanation:

Dado que:

una manzana se corta en 12 partes y se comen ocho partes.

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La fracción de manzanas que quedan = valor original de la manzana que se corta - la fracción de la manzana que se come

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