Question

22
(a) 14 cm
(b) 28 mm
(c) 21 cm
Find the circumference of the circles with the following radius: (Take​

Answer 1

Answer:

circumference of the circles 2×22/7×r

1= r=14cm

so 2×22/7×14

2×22×2

44×2

88cm

2=

r=28mm

so 2×22/7×28

2×22×4

2×88

176mm or 17.6 cm

3=

r=21cm

so 2×22/7×21

2×22×3

44×3

132cm

Answer 2

Answer:

(a) Given: Radius (r) = 14 cm

∴ Circumference = 2πr = 2 × 227 × 14

= 88 cm

(b) Given: Radius (r) = 28 mm

∴ Circumference = 2πr = 2 × 227 × 28

= 176 mm

(c) Given: Radius (r) = 21 cm

∴ Circumference = 2πr = 2 × 227 × 21

= 132 cm

Step-by-step explanation:

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