Question

If the circumference of two concentric circles are 88cm and 66cm find the difference of their radious

Answer 1

Answer:

circle 1 =88cm

circle 2=66cm

Step-by-step explanation:

diff. between radius

circumference of c1=2pie×r1

88=2×22/7×r

88×7/44=r

2×7=r

14=r

Circumference of c2=66=2×pie×R

66=2×22/7×R

66×7/44=R

6×7/4=R

42/4=R

10.5=R

difference = r-R

= 14-10.5=3.5cm

3.5cm is the answer 100%

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