Question

Find the circumference of a circle whose radius is 28 cm​

Answer 1

Step-by-step explanation:

r=28

circumference=2πr

= 2×22/7×28

=2×22×4

=176cm

Answer 2

✬Question✬

• Find the circumference of a circle whose radius is 28 cm.

✬To Find✬

• Circumference of a circle = ?

✬Given✬

• Radius = 28 cm

✬Solution✬

We know that,

• Circumference of circle=2$\pi\:r$

Let us consider that,

$\: \: \: \: \: \: \implies \Large\sf{ \pi = \frac{22}{7} \: and \: r \: = 28}$

Appyling the values,

$\longrightarrow \sf{2 \: \times \frac{22}{7} \: \times 28 }$

$\longrightarrow \sf{2 \: \times \frac{22 \times 28}{7}}$

$\longrightarrow \sf{2 \: \times \frac{616}{7}}$

$\longrightarrow \sf{2 \: \times 88}$

$\longrightarrow \sf{176} \: cm$

✬Answer✬

$\bullet \: \sf\red{Thus,\:the\:circumference\:of\:circle\:is\:176 \: cm.}$