This composite object is made of a 10-cm cube on top of a 20-cm cube. Determine its surface area.

A-2800 cm
B-2500 cm
C-2900 cm
D-3000 cm

Several paint mixtures are made by mixing blue paint and white paint. paint colors blue paint white paint mixture a 5 cups 12 cups mixture b 6 cups 6 cups mixture c 4 cups 12 cups mixture d 5 cups 6 cups which mixture has the highest ratio of blue paint to white paint