Question

22 Calculate:
(a) The circumference of a circle
of radius 3.5 cm. and
(b) Area of a circle of radius 4.65 cm.​

Answer 1

Answer:

(a)=2×pi×r

=2×3.142×3.5

=21.98cm

(b)=pi×r×r

=3.142×4.65×4.65

=67.93cm^2