Just a Thought..

When a loud enough sound occurs, the CCTV camera will detect it and immediately notify the respective authority about the incident. or
Maybe we could use the face-recognition to identify whether the person is familiar or not, I don't have enough time to go and check if there are any products. This was kinda numb idea.

E-mails directly through WhatsApp + Categorization of Attachments via labels

#I've got a suggestion for WhatsApp;
What if we could send emails directly through WhatsApp? It would make communication so much easier!
Rather than sending an E-mail, it would be something new.
I'd love to see that as a feature on WhatsApp.

#One more feature;
we are using WhatsApp groups as college/school groups so the Class Representative would send all the materials, at least my college does that. So I thought what if we could categorize all the PDFs & Other types of files via labels beneath the attachment; also we would be able to sort out attachments through their labels. That would be so cool! 
#WhatsApp

𝞹 - The area of the Square & Unit Circle ~0^0~

My Math II Professor told me that our nature operates seamlessly with polar coordinates and the geometry of spheres. but we as humans prefer a cartesian coordinates system. For one reason that our planets of the solar system are also kinda like the sphere,

➤ If you have a unit circle, the area of that circle would be 𝞹, 

The area A = 𝞹r^2, Since the r=1

➤ If you had asked to create a square with the exact same area, the length of that square would be L = √𝞹.