The formula to calculate the circumference of a circle is C = 2πr, where C is the circumference and r is the radius.
Using the given values and the equation above, we can calculate the circumference for each circle:
a) Circumference = 2 * (22/7) * 7 = 44 cm
b) Circumference = 2 * (22/7) * 70 = 440 cm
c) Circumference = 2 * (22/7) * 35 = 220 cm
d) Circumference = 2 * (22/7) * 14 = 88 cm
e) Circumference = 2 * (22/7) * 42 = 264 cm
f) Circumference = 2 * (22/7) * 1.05 = 6.6 cm
g) Circumference = 2 * (22/7) * 21 * 100 = 13200 cm
h) Circumference = 2 * (22/7) * 22 * 100 = 13860 cm
i) Circumference = 2 * (22/7) * 28 * 100 = 17600 cm
j) Circumference = 2 * (22/7) * 7.7 = 48.4 cm
Therefore, the circumferences of the circles are:
a) 44 cm
b) 440 cm
c) 220 cm
d) 88 cm
e) 264 cm
f) 6.6 cm
g) 13200 cm
h) 13860 cm
i) 17600 cm
j) 48.4 cm
Find the circumference of circles with these given radii take π =22/7
A 7cm b 70cm c 35cm d 14cm e 42cm f 1.05cm g 21m h 22m I 28m j 7.7cm
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