Question

4) Find the radius of circle whose circumference is
(a) 44cm
(b) 66cm.
$2 \times 22 \div 7 \times 44$
​

Answer 1

Answer:

a. let the radius be x

hence,2πr=44

r=44.7/44

hence,radius is 7cm

b.21cm

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Answer 2

a. cir=44cm

44=2×22/7×r

r=7cm

b.cir=66

66=2×22/7×r

66/44×7=r

r=21/2

r=15.5cm