8. A rectangle is measured to be 6.4 +0.2 cm by 8.3 $0.2 cm. a) Calculate its perimeter in cm
b) Calculate the uncertainty in its perimeter.

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

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c because the news are a source of information of things that happen on the daily and shows evidence about that particular topic

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