The diameter is 7.2 meters. What is the circumference
$${\mathtt{7.2}}{\mathtt{\,\times\,}}{\mathtt{3.141\: \!592\: \!653\: \!589\: \!793\: \!2}} = {\mathtt{22.619\: \!467\: \!105\: \!846\: \!511\: \!3}}$$
(diameter * pi)