A glass fish tank without a cover is 6 decimeters long, 4 decimeters wide, and 4.5 decimeters high. How many square decimeters of glass is needed to make such a fish tank?
一个无盖的玻璃鱼缸，长6分米，宽4分米，高4.5分米，制作这样一个鱼缸，至少需要多少平方分米的玻璃？
<gadget id="calculator">20 + 90</gadget>
<output>110</output>

<result>110</result>