An archery target was drawn using three circles with the same centre O, The radius of the three circles are 35 $$cm$$, 21 $$cm$$ and 7 $$cm$$ respectively. (Take π = $$\frac{22}{7}$$) <hr> What fraction of the target is shaded? <br> $$\frac{A}{B}$$ <hr>A: <input min="0" type="number" class="lineinput" placeholder="?" /> B:<input min="0" type="number" class="lineinput" placeholder="?" />