Let’s solve each cube step by step. Remember, a cube has 6 identical square faces. So:
- First, find the area of
one face (side × side).
- Then multiply that by
6 to get the total surface area.
---
Cube 1: Side = 10 cm
Area of 1 face = 10 cm × 10 cm =
100 square cm
Total surface area = 100 cm² × 6 =
600 cm²
---
Cube 2: Side = 11 cm
Area of 1 face = 11 cm × 11 cm =
121 square cm
Total surface area = 121 cm² × 6 =
726 cm²
*(Check: 120×6=720, plus 1×6=6 → 726 ✔️)*
---
Cube 3: Side = 12 cm
Area of 1 face = 12 cm × 12 cm =
144 square cm
Total surface area = 144 cm² × 6 =
864 cm²
*(Check: 140×6=840, 4×6=24 → 840+24=864 ✔️)*
---
Cube 4: Side = 13 cm
Area of 1 face = 13 cm × 13 cm =
169 square cm
Total surface area = 169 cm² × 6 =
1014 cm²
*(Check: 170×6=1020, minus 1×6=6 → 1020–6=1014 ✔️)*
---
Final Answer:
Cube 1: Area of 1 face = 100 cm², Total surface area = 600 cm²
Cube 2: Area of 1 face = 121 cm², Total surface area = 726 cm²
Cube 3: Area of 1 face = 144 cm², Total surface area = 864 cm²
Cube 4: Area of 1 face = 169 cm², Total surface area = 1014 cm²
Parent Tip: Review the logic above to help your child master the concept of surface area of cube worksheet.
