Question

the radii of two circles are 20 cm and 13 cm find the difference between the circumferences ...​

Answer 1

Answer:

1st circle:

circumference =2×22/7×r

=2×22/7×13

=572/7

=81.71------(1)

2nd circle

circumference =2×22/7×r

=2×22/7×20

=880/7

=125.71----(2)

Now subtract eq (1) from eq (2)

therefore

125.71-81.71

= 44

Therefore the difference will be of 44

Answer 2

Answer:

it is simple

Step-by-step explanation:

circumference of 1st circle=2×20×22/7=125.71cm

circumference of 2nd circle=2×13×22/7=81.71cm

difference=125.71-81.71=44 cm