如图中阴影甲的面积比阴影乙的面积多28平方厘米，AB=40厘米，三角形ABC是直角三角形，求BC的长．
直接写出得数÷=÷6=÷= 3÷= 48×12.5%= 0.5×= 1÷8×= 5÷÷5= （）×2×3==
直接写出得数．÷= 1÷=×=×8=﹣=÷= 1÷=÷6=
用图形表示4÷．
直接写出得数﹣0.625== 40÷8%== 3×11=+79×= 8﹣4÷=×1.5+3== 4×+÷4===
直接写出得数======= 8×0.125=
÷
=
÷6=
÷
= 3÷
=
= 1÷8×
= 5÷
÷5=
）×2×3=
=
÷
= 1÷
=
×
=
×8=
﹣
=
÷
= 1÷
=
÷6=
．
﹣0.625=
= 40÷8%=
= 3
×11=
+79×
=
×1.5+3=
= 4×
+
=
=
=
=
=
=
=
=
= 8×0.125=
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