Question

$OABC$ is a rectangle inscribed in a quadrant in a circle of radius $35cm$. Find the area of rectangle if $oc=7cm$

Answer 1

${CB}^2={35}^2-7^2=1176$

$\Rightarrow CB=34.2928$

$\therefore$ area $=34.2928\times 7$ $=240.0499{cm}^2$