If that's a rectangle, just multiply length x width.
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incomplete question 11 what times 13 what if inches then 11 x 13 = 143 square inches
You have 40*14 = 560 square inches.
No. Surface area can be measured in square inches, but so can many other things.
This is an invalid conversion: square inches is a measure of area and inches is a measure of length or distance.
Invalid conversion: square inches is a measure of area and inches is a measure of length or distance.