Answer:
CÃrclÑ” DÃαmÑ”tÑ”r CÃrcumfÑ”rÑ”ncÑ”
( A ). 3 cm 9.42 cm
( B ). 10 cm 31.40 cm
( C ). 7.64 cm 24 cm
( D ). 5.73 cm 18 cm
( E ). 1 cm 3.14 cm.
Step-by-step explanation:
Formula used
◈ Circumference of circle = π × diameter
◈ Diameter of circle = Circumference of circle / π
Solution
usÃng vαluÑ” σf Ï€ = 3.14
( A ) DÃαmÑ”tÑ”r = 3 cm
CÃrcumfÑ”rÑ”ncÑ” = 3.14 × 3 = 9.42 cm.
( B ) DÃαmÑ”tÑ”r = 10 cm
CÃrcumfÑ”rÑ”ncÑ” = 3.14 × 10 cm = 31.40 cm.
( C ) CÃrcumfÑ”rÑ”ncÑ” = 24 cm
DÃαmÑ”tÑ”r = 24 / 3.14 cm = 7.64 cm.
( D ) CÃrcumfÑ”rÑ”ncÑ” = 18 cm
DÃαmÑ”tÑ”r = 18 /3.14 = 5.73 cm.
( E ) DÃαmÑ”tÑ”r = 1 cm
CÃrcumfÑ”rÑ”ncÑ” = 3.14 × 1 cm = 3.14 cm.
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