Question

the circumference of a circle is 42cm then find its diameter​

Answer 1

Answer:

circumference of circle=2pyr=42

2×py×r=42

py×r=42-2

pyr=40

Answer 2

d = 13.36

Step-by-step explanation:

circumference of a circle = 42

2πr = 42

2×22/7×r = 42

r = 42×7/22×2

r = 21×7/22

r = 147/22

r = 6.68cm

d = 2(6.68)

d = 13.36 cm