Thinking Summary · Step 1
Mastered[object Object]
[Discovery] Tap each face of the 18×11×9 prism net to count all 6 rectangles and add up the surface area.
Step 1
Active Step[Discovery] Tap each face of the 18×11×9 prism net to count all 6 rectangles and add up the surface area.
Surface Net
Tap each face of the 18 × 11 × 9 prism to count its 6 faces.