Question

3. Find the radius of a circle whose circumference is :
(i) 154 cm (ii) 330 m (iii) 99 cm​

Answer 1

Answer:

we know that circumference of circle =2πr

therefore by the question (a) 2πr=154, r=154÷2π, we know π=22÷7,, therefore r=154÷2(22÷7)

or we can write r=154×(7÷44) which implies r=1078÷44 which =>r=24.5

Now do as same I did for calculating the radius

Answer 2

Answer:

find the radius of a circle whose circumference is 330