Six friends together with their respective partners all meet up for a meal. To  commemorate the occasion, they arrange for a photograph to be taken of all 12 of them  standing in a line. How many different arrangements are these if each friend is standing next to his or her partner?​

1440 different arrangements are possible.

Step-by-step explanation:

Number of arrangements of n elements:

The number of arrangements of n elements is given by:

In this question:

6 couples, in which each can be positioned in 2 ways(him/her or her/him). So

1440 different arrangements are possible.

if the pizza is divided equally into 2 equal halves then you would get

πr^2/2

where r is the radius of the pizza.

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answer: 10 meter

step-by-step explanation:

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