According to the Royal Canadian. Mint Act, a 50-cent Canadian coin must have a diameter of. 27.13 millimeters. What is the ... tenth of a square millimeter? ... nearest square inch of the smallest cover that ... area to the nearest tenth of a meter.

Answer 1

As a Canadian, I haven't seen a 50-cent coin in circulation for years.
Anyway...
I really don't understand what your question is.
The area would be π(13.565^2) mm^2
= appr 578.082.. mm^2

"What is the ... tenth of a square millimeter? "
1/10 square mm = .1 square mm

are you supposed to round off the above answer to a tenth?
then it would be 578.1 mm^2

" nearest square inch " --- we have not used inches since 1972

"nearest square inch of the smallest cover that ... area to the nearest tenth of a meter."

that makes no sense to me

(Furthermore, if you check with your textbook, the spelling in our country would be millimetre, not millimeter.
A millimeter would be an instrument that measures millis, a millimetre is a unit of measurement.
e.g. A speedometer is an instrument that measures speed.

Answer 2

577.8mm

Answer 3

557.8mm

Answer 4

It’s actually none of those, it’s 577.78 mm squared