A cuboid fish tank (without cover) is 1.2m long, 0.3m wide, and 30cm high. How many square meters of glass is needed at least?
一个长方体的鱼缸(无盖)，长1.2m，宽0.3m，高30cm，至少需要多少平方米玻璃．
<gadget id="calculator">0.36 + 0.09 + 0.72</gadget>
<output>1.17</output>

<result>1.17</result>