In sharing a bottle of coke with my two sons, Tom and Harry. Tom brought a 3cm diameter, 6cm tall cup which I filled to the brim. Harry brought a 6cm diameter, 3cm tall cup which I also filled to the brim.
Who had the most coke?
Volume of Tom's cup: Height of cup = 6cm Diameter of cup = 3cm Radius (r) = 1.5cm Volume = πr²h = π x 1.5² x 6 = 42.41cm³
Volume of Harry's cup: Height of cup = 3cm Diameter of cup = 6cm Radius (r) = 3cm Volume = πr²h = π x 3² x 3 = 84.82cm³
Not only did Harry had more coke, he had exactly twice of Tom's coke.
Answer: Harry
Moral: This question is very similar to Q55, diameter matters alot.
In sharing a bottle of coke with my two sons, Tom and Harry. Tom brought a 3cm diameter, 6cm tall cup which I filled to the brim. Harry brought a 6cm diameter, 3cm tall cup which I also filled to the brim.
Who had the most coke?
Volume of Tom's cup: Height of cup = 6cm Diameter of cup = 3cm Radius (r) = 1.5cm Volume = πr²h = π x 1.5² x 6 = 42.41cm³
Volume of Harry's cup: Height of cup = 3cm Diameter of cup = 6cm Radius (r) = 3cm Volume = πr²h = π x 3² x 3 = 84.82cm³
Not only did Harry had more coke, he had exactly twice of Tom's coke.
Answer: Harry
Moral: This question is very similar to Q55, diameter matters alot.
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Telegram and Signal Havens for Right-Wing Extremists
Since the violent storming of Capitol Hill and subsequent ban of former U.S. President Donald Trump from Facebook and Twitter, the removal of Parler from Amazon’s servers, and the de-platforming of incendiary right-wing content, messaging services Telegram and Signal have seen a deluge of new users. In January alone, Telegram reported 90 million new accounts. Its founder, Pavel Durov, described this as “the largest digital migration in human history.” Signal reportedly doubled its user base to 40 million people and became the most downloaded app in 70 countries. The two services rely on encryption to protect the privacy of user communication, which has made them popular with protesters seeking to conceal their identities against repressive governments in places like Belarus, Hong Kong, and Iran. But the same encryption technology has also made them a favored communication tool for criminals and terrorist groups, including al Qaeda and the Islamic State.
