Question

what is the diameter of a circle whose circumference is 11 cm?​

Answer 1

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circumference =11cm

2πr=11

4r=7

r=7/4

diameter=7/2=3.5cm

Answer 2

circumference= 11cm

therefore,

2× 22/7×r=11

r=11×7/2×22

r=77/44

r=7/4

now,

d=2×r

d=2×7/4= 7/2

therefore, d=3.5cm

hope I helped you