Super easy question

where are you from?

(if not from the u. s.a)

Zac wanted to determine the measure of r and of ? r in the triangle below. to fine the measure of r, zac sets up the problem.42^2 + 24^2 = r 2. determine whether zac set the problem up correctly.

In africa what do they call a crop grown for direct sale and not for use?

Impact of over population and under population?