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Answer:
1. The diameter of a flower clock in the park is 9 m what is the circumference of the clock?
Solution:
Formula: C = 2 π r
C = 2 π (9m)
C = 18 π m
C = 18(3.14)m
C = 56.52cm
2. Mandy is sewing a round throw pillowcase whose diameter is 45 cm. She will put beads around it. How many beads will she use if each bead measures 0.3 cm?
Solution:
Formula: C = πd
C = 3.14 (45 cm)
C = 141.3 ÷ 0.3
C = 471 beads