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8.1 square inches equates to 52.26 square centimeters.
The answer is 80.645 square centimeters. 1 square inch is equal to 6.4516 square centimeters. So multiply the number of square inches by 6.4516 to convert.
Note that "11 inches squared" means 11 x 11 or 121 square inches. 11 square inches would be 70.97 square centimeters (1 square inch = 6.4516 square centimeters) 121 square inches would be 780.64 square centimeters.
27.09672 cm^2
15 centimeters times 15 centimeters is 225 squarecentimeters. That cannot be converted to linear inches, but must be converted to square inches.15 centimeters squared = 2.32500465 square inches. That result was gotten simply by typing 15 centimeters squared in square inches into the Google search bar.