;w; is right? bc i dont know if it is -w-

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?

Ten times the square of a non-zero number is eqaul to ninety times the number

What is the area of the original rectangle? 8 cm² 20 cm² 25 cm² 40 cm²