Question

find the circumference if the diameter of circle is 7 cm​

Answer 1

Answer:

circumference of circle=2πr

diameter=7cm

soo radius=1/2of diameter

1/2×7=3.5cm

2πr=2×22/7×3.5=22cm

therefore circumference of circle=22

Answer 2

Answer:

we know

circumference of a circle=2πr=π×2r    ( where r is radius)

circumference of a circle=πd      (where d diameter, ∵2r=d)

π=22/7; d=7 cm

                Circumference=22/7 × 7=22 cm

Hope it helps u...