Question

Find the circumference of the circles with the following radius: (Take π =22
(a) 14 cm. 7
(b) 28 mm
(c) 21 cm​

Answer 1

Answer:

circumference=

$\pi \times diameter$

a=14*22/7

a=44

b=28*22/7

=88

c=21*22/7

=66

Answer 2

Question :-

• Find circumference of the following circles :-

Solution :-

(1) 14 cm

Given:

• Radius (r) = 14 cm

⠀⠀⠀∴ Circumference = 2πr

⠀⠀⠀ = 2 × 227 × 14

⠀⠀⠀= 88 cm

(2) 28 mm

Given:

• Radius (r) = 28 mm

⠀⠀⠀∴ Circumference = 2πr

⠀⠀⠀= 2 × 227 × 28

⠀⠀⠀= 176 mm

(3) 21 cm

Given:

• Radius (r) = 21 cm

⠀⠀∴ Circumference = 2πr

⠀⠀⠀= ⠀2 × 227 × 21

⠀⠀⠀= 132 cm