Please? Just this one little thing.

...

...

...

1.08321x10¹² km³

She mentally thanks the universe and reports on the planet's volume to her tutor.

"Huh," she says. "I...would have expected that to be beyond someone who just started."

"- in pain tolerance or in magical skill?"

"Well, mostly the latter."

"I'm cheating on the pain tolerance. I am not sure how to explain the magical skill."

"I'm not sure either. Can you describe your thought process?"

"I, ah, explained to the world that I could guess how big the planet was based on the gravity and the curvature but that surely it wouldn't mind helping me."

"...How did you know the curvature?"

...she points at a gap in the plants beyond which is the horizon.

"...You can tell from the plants?"

"I can see the ocean through there, which I'm assuming matches the planet's curve unless you are currently having some kind of adverse weather event or bizarre magical happening right there."

"You can see the ocean from here?" She looks at the plants again and frowns.

"Yes? It's possible I can see better than humans."

"I sure can't see anything from here."

"Can you - count the tiles on that gray roof?" Point.

"Uh. No. Not without magic."

"...okay. I must see better than humans. Does magic let you borrow others' senses? That's a common use of osanwë, people will leave their eyes and ears open."

"Uh, there's illusions, otherwise no."

"Do illusions compensate for weaker senses -"

"Well, if one person can see something farther away they can make an illusion closer up."

"Ah. So not quite, except in the sense that a telescope can."

"Exactly."

"Oh well. Does this explain why I was able to derive the volume of the planet?"