45mm * 45mm * 3.14 = 6358.5 sq. mm
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219.91mm
Diameter of circle: 70/pi = 22.28 mm rounded to two decimal places
3,848.45mm2.
560mm (70 x 8 = 560).
I don't understand why there are so many questions about rectangles' perimeter. You just add the length and the width and double your answer....