Question

find the area of the circle woth radius 28mm

Answer 1

Answer:

$area. - ) \: \pi {r}^{2} \: \: \: {mm}^{2}$

$= \frac{22 \times 28 \times 28}{7} \: \: \: \: {mm}^{2}$

$= 22 \times 4 \times 28 \: \: \: \: {mm}^{2}$

$2464 \: \: \: \: \: {mm}^{2}$