Question

if the radius of a coin is 2cm.calculate the area

Answer 1

Answer:

Given, radius = 2cm

As the coin is in circle shape that's why :-

=> Area of circle = πr²

=> πr² = 22/7 × 2 × 2

=> πr² = 22/7 × 4

=> πr² = 88/7

=> πr² = 12.57 cm2.

So, The area of the coin is 12.57 cm2.

Explanation:

HTH!¡! :)

Answer 2

Answer:

12.56 cm²

Step-by-step explanation:

Given :

Radius of coin (Let r) = 2cm

To find :

Area of the given coin

Solution :

We know that,

$\boxed{\mathrm{A = \pi r^2}}$

Thus, substituting we get,

$\implies \mathrm{A = \pi \times (2)^2}$

$\implies \mathrm{A = 4 \times 3.14} \ \ [\because \pi = 3.14]$

$\implies \mathrm{A = 12.56\ cm^2}$

Hope it helps!!