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68 square units
70 square units
72 square units
80 square units
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6868 square units\newline7070 square units\newline7272 square units\newline8080 square units\newlineReview Progress\newlineType here to search

Full solution

Q. 6868 square units\newline7070 square units\newline7272 square units\newline8080 square units\newlineReview Progress\newlineType here to search
  1. Identify numbers: Step 11: Identify the numbers to be added. We have 6868, 7070, 7272, and 8080 square units.
  2. Add numbers: Step 22: Add the numbers together. Calculate 68+70+72+8068 + 70 + 72 + 80.
  3. Perform addition: Step 33: Perform the addition. 68+70=13868 + 70 = 138; 138+72=210138 + 72 = 210; 210+80=290210 + 80 = 290.