Question

5. Find the diameter of a circle whose circumference is
(1) 30.8 cm​

Answer 1

Answer:

9.8 cm

Step-by-step explanation:

2πr=30.8cm

r=30.8/2π=4.9 CM

Diameter=2r=9.8 cm

Answer 2

Answer:

9.8cm

Step-by-step explanation:

2πr is circumference

30.8 equals 2πr

r is 30.8/2π

there diameter will be

twice radius

2× 30.8/2π

30.8/π

30.8/(22÷7)

30.8 × 7/22

9.8 cm

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