Answer:
65 [tex]mm^2[/tex] or 0.65 [tex]cm^2[/tex] which are exactly the same area
Step-by-step explanation:
Notice that 65 [tex]mm^2[/tex] is exactly the same as 0.65 [tex]cm^2[/tex].
The most likely answer is 65 [tex]mm^2[/tex], since 8 mm by 8 mm is a reasonable size for a square shaped key of a hand-held calculator to fit a human finger.
The answer 6.5 [tex]mm^2[/tex] is an area too small (about a square 3 mm by 3 mm which is to small for a human finger. It would be more appropriate for a pen or point of some type.
