Question

find the radius of a circle whose circumference is 28m?​

Answer 1

Answer:

Start by finding the diameter; the formula for circumference is

πd , so set up an equality:

28π = c28π = πd

Divide both sides by

π :28ππ=πdπ28ππ = πdπ28=d

Diameter is twice as large as radius, so divide your diameter by 2 to get radius.

d2=r=282=14

Therefore, your radius is

14 units.

Answer 2

Step-by-step explanation:

Circumference of circle = 28m

circumference= 2πr

28=2×22/7×r

r=4.4m

Thus, the radius of circle is 4.4m