<span><span>10π</span><span>40π</span></span><span> = </span><span><span>62</span><span>x2</span></span> x = 12
<span>When </span>circles<span> have the same </span>central<span> angle measure, the </span>ratio<span> of measure of the </span>sectors<span> is the same as the </span>ratio<span> of the radii </span>squared<span>.</span>