CPM Homework Help : GC Problem 9-20

There are 11 cubes. From the front, there is 1 cube on the left side first row, 2 cubes, second row, and 3 cubes, third row. Center, first row, has 1 cube and third row, 2 cubes. Right side, first and second rows, each has 1 cube. At right is the solid from problem 9-7.

On graph paper, draw the front, right, and top views.
Find the total surface area of the solid.
Answer (b):
$\text{Total surface area} = 42 \; \text{units}^2$

Use the eTool below to complete the problem.
Click the link at right for the full version of the eTool: 9-20 HW eTool (Desmos)