Answer:31.4cm
Step-by-step explanation:
Circumference=2×π×(diameter/2)
Circumference=2×3.14×10/2
Circumference=(2×3.14×5)
Circumference=31.
If you flipped the graph y=x^2+2x-2 vertically, you would get the graph y=-(x^2+2x-2) this is True.
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Maximum speed: 55mph + 5mph = 60mph
minimum speed: 55mph - 5mph = 50mph
Hope this helped?