It would be C. Informal because you are suppose to start business letters with Dear (Yourname) and it's the only one that does.
Answer: Because of Gyan Darshan Channel Ten Sport And And From Machine 10000 Reported From Sleep Sleep Sound Device
Explanation:
The perimeter of a triangle (or any other shape) is the sum of the lengths of all of its sides. So if the side lengths in a right triangle are doubled, its perimeter will also be doubled.
For example: Triangle with lengths 3,4,5 will be 12
Now with the lengths doubled: 6,8,10...The perimeter will be: 24!
A. Developing a thesis statement