Question

1. Find the circumference of a circle whose radius is
(i) 28 cm
(ii) 10.5 cm
(iii) 3.5 m​

Answer 1

Answer:

1............2×22/7 × 28

=176cm

2.... 2×22/7× 10.5 = 66 cm

3... 2×22/7×3.5. = 22 cm

Step-by-step explanation:

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Answer 2

$\huge\bf{Question:}$

Find the circumference of a circle whose radius is

(i) 28 cm

(ii) 10.5 cm

(iii) 3.5 m

$\huge\bf{Solution:}$

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(i) 28 cm

Circumference of circle = 2πr

$= {2}\times{3.14}.{28}$

=175.9 cm

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(ii)10.5cm

Circumference of circle=2πr

=${2}\times{3.14}.{10.5}$

=65.9 cm

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(iii)3.5cm

Circumference of circle=2πr

=${2}\times{3.14}.{3.5}$

=21.9cm

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