【题目】 C.为四射”可代多医学阅览室长5m,宽4m,高3.5m,$$粉刷的面积是多少平方米?(5分) 5 \times 4+(5 \times 3.5+4 \times 3.5)\times 2 \\ =20+31.5 \times 2 \\ =20+63 83-18=65(m^{2}) \\ m^{2} \\ =87(m^{2})$$答:粉别的面积是65m^{2。&现形式。妙想是沙...