PREVIEW

... swer:

Assuming that the radius of the small circle is r, and the circumference as ?.

= 2πr

The question asks for the area between radius 1 and 3, so we’ll call it ‘S’.

Therefore, the answer is 8π.

Teacher's Comment:

Well answered. This is a standard question for area.

Yoshii Akihisa's Answer:

Teacher's Comment:

It's been a while since I felt my veins popping.

Tsuchiya Kouta's Answer:

Te ...

YOU MAY ALSO LIKE
Dark Blood AgeChapter 800 - Fight until they were willing to talk
 421k
3.7/5(votes)
Sci-fiSeinenTragedyHorror

A mysterious natural phenomenon caused the Earth to be plunged into darkness. The world turned into an endless bloody chaos and mankind is on the brink of extinction…

My Triling SystemChapter 204 - 204 Chapter 204
 1.1k
2.9/5(votes)
FantasyHaremAdult

[ Ding! You have successfully obtained the fiftieth Triling Ring ]

[ You now have access to enter the Mystic Cave guarded by the Nine Dragons ]

[ New Quest: Vampires approaching. Stop them from invading the Mystic Cave by ordering the dragons to protect you and your men. You have one week before the vampires reach the foot of the cave. Learn how to tame and control the nine dragons before they arrive]

[ Failure to do so will lead to your demise and all the fifty rings you’ve gathered will be a waste. The magical world will be destroyed and vampires will take over the land. You will be reborn in the next 250 years and would have to start gathering the fifty rings once again ]

*****

Rejected, due to being an human in the land of elves, Kevin was banished and casted into the river the very day he was born. But fate said he would live as he was rescued by the very person who casted him into the river.

Every mage when they reach the age sixteen were told to attend the mage academy and Kevin, the abandoned human who had overheard the conversation of some students, got excited to attend this academy.

He asked from his guardian if he could attend the academy but unfortunately, he was denied, all because of him being an human and not an Elf. At that moment, he became angry and had locked himself up in his guardian’s workshop, that was a room full of all types of magical items.

But while in the room, Kevin had spotted a golden ring that instantly glowed as soon as it touched his bloody fingers. Surprisingly, he was given a system that granted him the opportunity to be an Elf. But what he discovered was that, he wasn’t just an elf but a fairy and also an human.

.....

Reborn; A Slave to the WorldChapter 84: Goddess of Death
 303
4.5/5(votes)
FantasyActionAdultAdventure

What’s the point of being reborn… if you come back in chains?Life in Kyoto was already unraveling. My dead-end job, my fading relationship—my girlfriend could barely look at me anymore. Maybe part of me knew the end was coming. Maybe part of me wanted it to.And then it did.“Oi, wake up,” a voice growled, thick with contempt.I opened my eyes to darkness—and pain.Tabata Yori. That was my name. Once. Before the world twisted. Before death spat me out into something colder and crueler.“Ugh, another worthless soul,” the voice sneered.Then came the boots. Each kick was a brutal reminder: I wasn’t in Kyoto anymore. I wasn’t anywhere safe. I’d fallen into a world ruled by shadows, where power is pain and obedience is survival.Why was I brought here? What do they want from me?I don’t know yet.But I do know this: If I’m going to suffer, someone’s going to bleed for it.disclaimer: Cover isn't mine and is temporary until I get a paid work done.Schedule: Looking for daily and will do as many chapters as I can each day.Thanks for any support that is given.

I Possessed a Demon SovereignChapter 758 - : 755. Unification of the Universe (Finale)(2)
 4.9k
5.0/5(votes)
ActionAdventureFantasy