Answer:
The value of the radius is 4.46cm.
Explanation:
Given the perimeter is 28 cm. So, if we want to find the radius then we should consider this perimeter as the circumference of the circle. Thus, we have to equate this value with the circumference (perimeter of the circle).
The perimeter of the circle or circumference = 2π r
Here, π = 22/7
r = radius
Now, 2π r = 28
r = 28 / 2π
r = 4.46 cm