Asquare $xabd$ of side length 1 is drawn inside a circle with diameter $\overline{xy}$ of length 2. the point $a$ lies on the circumference of the circle. another square $ycbe$ is drawn. what is the ratio of the area of square $xabd$ to the area of square $ycbe$?

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex

Bring the fraction a/a-4 to a denominator of 16-a^2

Could someone me with this question i’ve been stuck on it for 20 minutes