Question

Given that c = 2πr
a. find c when π= 3.142 and r=50
b.find r when c=286 and π=31/7​

Answer 1

Explanation:

a.c=2πr

c=2x3.142x50

c=100x3.142

c=0.03142

b.c=2πr

286=2x31/7xr

286=62r/7

286x7=62r

2002=62r

2002/62=r

32.3=r

r=32.3