A cuboid fish tank without a cover is 1.2 meters long, 0.6 meters wide, and 1 meter deep. How many square meters of glass should be used to make this fish tank?
一个无盖的长方体鱼缸，长1.2米，宽0.6米，深1米，做这个鱼缸至少要用玻璃多少平方米？
<gadget id="calculator">1.2 * 0.6</gadget>
<output>0.72</output>

<gadget id="calculator">1.2 * 1 * 2</gadget>
<output>2.4</output>

<gadget id="calculator">0.6 * 1 * 2</gadget>
<output>1.2</output>

<gadget id="calculator">0.72 + 2.4 + 1.2</gadget>
<output>4.32</output>

<result>4.32</result>