Question

The radius of a
circle is increased
by cm. Then the ratio of the
new circumference to the new
diameter is
a) π:3
b) π:2
C) π:1
d) π:1/2
​

Answer 1

Answer:

New radius=r+1 cm

Ratio=2π(r+1):2(r+1)=π:1'

Answer 2

Answer:

i think .......C) π:1 is correct.