Question

Find the area of the circle whose radius is 42cm.

Answer 1

Radius = 42 cm

Area = πr²

$= \frac{22}{\cancel{7}} \times \cancel{42}\: ^{6} \times 42 \\ \\ = 22 \times 6 \times 42 \\ \\ = 5544 \: {cm}^{2}$

Answer 2

Answer:

✮Formula used:

$ᴀʀᴇᴀ = \pi {r}^{2}$

✮Solution:

Given,

Radius (r) = 42cm.

$↦ ᴀʀᴇᴀ = \pi \times ( {42})^{2}$

$↦ ᴀʀᴇᴀ = \frac{22}{7} \times 42 \times 42$

$↦ ᴀʀᴇᴀ = 5544 {cm}^{2}$

Therefore, The area of the radius is 5544cm².