Question

find the area of the circles of radii [a] 2.1cm

Answer 1

Circumference=2×22/7×r

=2×22/7×2.1

=2×22/10×3

=2×11/5×3

=66/5

=13.2cm

Answer 2

$\huge\boxed{\sf{ANSWER!!!!}}$

AREA OF CIRCLE -:

$\huge\boxed{\sf{\pi {r}^{2} }}$

PUTING VALUE OF R

$> = > \frac{22}{7} \times {2.1}^{2} \\ \\ > = > 13.86 {cm}^{2}$