73 is 20% of what number?

On a architect's drawing of a house, 1 inche representa 1.5

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?

Is a positive integer raised to a negative power always positive