5. Find the circumference of the circles with the following measurements :
(a) diameter = 9 cm
(b) radius = 6 cm
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Step-by-step explanation:
(a) d= 9cm
r= 4.5cm
circumference= 2πr
= 2(22/7)4.5
= 198/7cm²
(b) r= 6cm
circumference = 2πr
= 2(22/7)6
= 264/7cm²
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