Question

做一个无盖的长方形木箱,长1米,宽8分米,高6分米,至少要用木板多少平方米?

Answer 1

8分米=0.8米

6分米=0.6米

1*0.8+(1*0.6+0.8*0.6)*2

=0.8+(0.6+0.48)*2

=0.8+1.08*2

=0.8+2.16

=2.96