如图ABCD为直角梯形，AB=15厘米，AD=12厘米，阴影部分面积为15平方厘米，梯形ABCD的面积是多少平方厘米？
直接写得数．=== 10×====== 4××=
×=÷= 14×=×÷3=×2=÷4=÷=×=÷=÷=×=÷=×= 10÷=×8=÷=×=×=
直接写出得数．﹣=×=÷=×= 1﹣35%=×÷×=
看谁算得快!×= 6÷= 122= 8×3.14=÷= 75×4×2.5%=
直接写出得数．×8=÷2=÷=×=﹣= 6.8÷10%=×= 1÷=÷60%=×15= 4.5+=×=
=
=
= 10×
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=
=
=
=
= 4×
×
=
×
=
= 14×
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×
÷3=
×2=
÷4=
÷
=
×
=
=
÷
=
×
=
=
×
= 10÷
=
×8=
÷
=
×
×
﹣
=
×
=
÷
=
×
= 1﹣35%=
×
=
×
= 6÷
= 122=
÷
= 75×4×2.5%=
×8=
÷2=
÷
=
×
=
﹣
= 6.8÷10%=
×
= 1÷
=
÷60%=
=
×
=
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