Question

if radius of circle is 21 cm then what will be it's circumference and area​

Answer 1

Answer:

22/7 × 21

then cut the 7 with 21

and the anwer is 22× 3

then abswer comes 66

Answer 2

Answer:

circumference =132cm

,area=1386cm²

Step-by-step explanation:

circumference of circle =2πr

=2×22/7×21

=2×22×3

=44×3

=132cm

area of circle =πr²

=22/7×21×21

=22×3×21

=66×21

=1386cm²

Hope it correct