棱长是5厘米的两个正方体拼成长方体,长方体的表面积是 ,体积是 .
= : =75%=3÷ = .(填小数)
10÷ = :75== %= (填小数).
÷4=2=3=.
÷ = %=0.375=.
3: ==24÷ = %=五折=.