Round 822,119 to the nearest ten thousand.

The radius of the circle is 4 cm and the measure of the central angle is 90° the area of the sector with a central angle measuring 90° and radius of length 4 cm is vt cm the triangle in the sector is 4 cm the area of the triangle is v/cm² the area of the segment of the circle is (471 - ) cm?

This is different from the first one can someone me

An ant travels at a constant rate of 30cm every 2 minutes.at what speed does the ant travel per minute