(1)12×5+(12-6)×(10-5)÷2,
=60+15,
=75(平方厘米),
答:组合图形的面积是75平方厘米;
(2)(8.5+15)×13÷2-8.5×4÷2,
=23.5×13÷2-17,
=152.75-17,
=135.75(平方厘米),
答:组合图形的面积是135.75平方厘米.
(1)12×5+(12-6)×(10-5)÷2,
=60+15,
=75(平方厘米),
答:组合图形的面积是75平方厘米;
(2)(8.5+15)×13÷2-8.5×4÷2,
=23.5×13÷2-17,
=152.75-17,
=135.75(平方厘米),
答:组合图形的面积是135.75平方厘米.