Question

Find the circumference of the circle whose radius is (a) 12 cm (b) 7.2 cm (c) 15 mm (take = 22/7)

Answer 1

Answer:

circumference of a circle =2πr

= 2×22/7×12

= 75.4cm

(b) 7.4cm= 2πr=2×22/7×7.2=45.2cm

(c) 15mm=2πr=2×22/7×15= 94.2mm

Answer 2

Answer:

12cm=7t

Step-by-step explanation: