Question

Find the circumference of each circle Diameter =4cm Diameter.=7 cm

Answer 1

Answer:

for diameter 4cm

then radius = 2cm because radius is half of diameter

therefore the circumference of circle = 2pia× radius

2×3.14×2=12.56cm

as usual when diameter is 7 cm

then circumference of the circle is = 2 pia × r

2 ×22÷7×7÷2

here 7 and 7 will cancel and 2 and 2 also cancels therefore the ans will be 22 cm