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 Class 7 Mathematics Length, Perimeter and Area: Perimeter and Circumference

The design below is made up of a pair of parallel lines each 3 cm long, two small half circles each of diameter 7 cm and two large half circles each of diameter 14 cm. What is the perimeter of the design? (Take #pi==22/7#)
figperimeter19520201125.JPG
A. 39 cm
B. 66 cm
C. 72 cm
D. 136.5 cm

 (4m 20s)
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