Why do we call mathematics as maths?

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?

How do i get my dad to stop making me gargle his pickle i want my mom to gargle my pickle not my dads

Multiply. write your answer in simplest form. 3/8 x 5/7