Question

Find the circumference of a circle whose diameter is:

(i) 28 cm

(ii) 70 cm

(iii) 42 cm​

Answer 1

Answer:

Answer in the attachment!

Sry if my handwriting is bad!

Answer 2

Answer:

c= 2πr

r=d/2

=28/2 =14

(i) 2×22/7×14

=2×22×2

=88

(ii) r=35

= 2×22/7×35

=2×22×5

=220

(iii) r= 21

=2×22/7×21

=2×22×3

=132