Answer:
B. Binary Code
Explanation:
Binary code is the base-2 system used by computers to represent data. Binary code consists of 0's and 1's which can be used to represent states such as on or off; go or no-go and more.
Answer:
11. 1million square decimetres (from online)
20. assuming room is rectangular,
length= (p - 2b)/2
because perimeter= 2 length + 2 breadth for rectangular
