6 1/2 divided by 3/4 in simplest form

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

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 to use order of operation in 20 divide by 4 multiply 5 = 1