Question

find the area of a circle whose circumference is 26.4 CM

Answer 1

circumference of circle=26.4cm

circumference of circle=2Πr

2Πr=26.4

2×22/7×r=26.4

r=26.4× 7 /2 ×22

r = 0.6 ×7

r=4.2cm

then,

area of circle = Πr sq.

= 22/7 × 4.2 × 4.2

=22× 4.2 × 0.6

= 22 × 2.52

= 55.44cm sq.

hope this will help you✌✌

Answer 2

2 pi r= 26.4

pi r=13.2

r= 13.2 * 7\22

r= 0.6* 7

r= 4.4 cm

area of the circle is pi r *r

= 22/7* 4.4* 4.4

= 1.26 cm squsre