Question

The circumference of a circle whose radius is 28cm is: i. 176cm ii. 1.76m iii. 17.6dm iv. All of these​

Answer 1

1. 176cm is answer

Step-by-step explanation:

• formula

$2\pi r$

• divide radius with 22/7 because we take
• $\pi$as 22/7

Answer 2

$\underline{ \: \: \bf{\orange {Solution :-}}}$

Circumference is given by “ C ”

and,

$\sf \blue⦿ \: \: \boxed{ \: \sf C = 2\pi r \: }$

then,

$\sf ➸ \: \: C \: = 2 \times \frac{22}{ \cancel7} \times \: \cancel{28}^{ \: \: 4}$

$\sf➸ \: 2 \times 22 \times 4$

$\sf➸ \: 44 \times 4$

$\sf \pink✫ \: \purple{\: C = 176 \: cm}$