Question

find the area and circumference of a circle of radius 21 CM ​

Answer 1

Step-by-step explanation:

Area=22/7×14×14

Area=616cm2

Circumference=2×22/7×21

Circumference=132cm

Answer 2

Answer:

area = 1385.44

circumference = 131.94

Step-by-step explanation:

area of circle is pi* (radius)^2

area= pi*21^2

area=3.14*441

area= 1385.44

Circumference of a circle is 2*pi*radius

C= 2*3.14*21=131.94