find the circumference of the circle with the following radius. ( take π = 22/7 )
(a) 14 mm
(b) 21 cm
(c) 28 mm
(d) 3.5 m
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Answer:
a-88mm
b-132cm
c-176mm
d-22 m
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Answer:
a) circumference of circle = 2πr
= 2×22/7 × 14
= 88 mm
b) circumference of circle = 2πr
= 2× 22/7 × 21
= 132 cm
c) circumference of circle = 2πr
= 2× 22/7 × 28
= 176 mm
d) circumference of circle = 2πr
= 2× 22/7 × 3.5
= 2× 22× 5/10
= 22×5/5
= 22 m
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