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Using approximation to 1 significant figure, estimate the value of

Using approximation to 1 significant figure, estimate the value of-example-1
User JonyD
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Rounded 0.531 to 0.5
And 79.4^2 to 80^2
And square root of 96.73 to square root of 100 which is 10
Use this we have
0.5*80^2=3200
3200/10=320
User Ryszard Szopa
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