For each ornament that a worker makes, he is paid $1.15. He makes 4 ornaments every 15 minutes.
Find the amount earned by the worker if he works for 3 hours. (method)

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?

Need solving this second acceleration problem.

The anwser cause i do not understand just plez