Question

Find the radius of a circle whose circumference is 154 cm

Answer 1

Answer:

circumference of a circle is 154cm = 2 pie r

so we know, pie means 22/7 = 3.14285

therefore , 2 pie r =154

                   pie r =154 / 2 = 77

                   r = 77 / pie = 77 / 3.14285

                   r = 24.500055 cm

Step-by-step explanation:

Answer 2

Circumference of circle =2Pie × Radius

154 = 2×22/7×R

7 = 2/7×R

R = 7×7/2

R = 49/2

Hence,The adius of circle= 49/2