Question

Find the circumference of a circular disc of diameter 28 cm.

Answer 1

Answer:

radius = 28\2

=14

circumference= 2πr

= 2×22/7×14

2×22×2

=22cm is circumference

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Answer 2

Answer:

88 cm

Step-by-step explanation:

radius (r) = diameter/2 = 14 cm

Circumference = 2πr = 2 × π × 14 = 28π

= 28 × 22/7 = 88 cm