isting"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">RadiusTypeOrSphere</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">CalculationType</span><span class="special">&gt;</span>
<span class="keyword">class</span> <span class="identifier">strategy</span><span class="special">::</span><span class="identifier">area</span><span class="special">::</span><span class="identifier