Answer:

B-5 cm

Step-by-step explanation:

THis is because diameter= 2r

d(/2)=(2r)/2(cancel the 2 in 2r)

=d/2=r

=10/2=r

=5=r

thanks, 5.0, & brainliest pls

Answer:

ots 5m

Step-by-step explanation:

diameter = 10 cm

R = 5m