用两个完全一样的梯形恰好可以拼成一个边长3厘米的正方形．已知梯形的上底是1厘米，请在下面画出这样的一个梯形，并注明上底、下底、高，再计算出它的面积．
直接写得数． 25×=÷6=×16=÷= 1÷=×=
直接写出得数÷= 20×=÷=﹣= 12÷50%= 3﹣﹣= 60×20%=÷26=+= 1﹣3%=
直接写出得数×4= 6﹣=÷= 6÷1%= 1÷=×=×0÷= 10+×=××5×7= 0.99×9+0.99=
直接得数．×21=×= 15÷=÷ 1﹣65%= 1+65%=÷=×=
直接写得数．×=×=×=×2= 5﹣= 12×= 1÷=+×=（6+）×=×39×=
=
÷6=
×16=
÷
= 1÷
=
×
=
÷
= 20×
÷
=
﹣
=
= 60×20%=
÷26=
+
= 1﹣3%=
×4= 6﹣
=
÷
= 6÷1%=
=
×
=
×0÷
×
=
×
×5×7= 0.99×9+0.99=
×21=
×
= 15÷
=
÷
÷
=
×
=
×
=
×
=
×
=
=
= 1÷
=
+
×
=（6+
）×
×39×
=
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