Formulae Used :-
Circumference of Circle :-
[tex] \sf \underline{\pink{\boxed{2\pi r}}}[/tex]
Value of π (pi) =
[tex] \sf \: { \frac{22}{7} } \: or \: 3.14[/tex]
Answer :-
9) C = 2πr = 2 × 3.14 × 4
≈ 25.13274
10) C = 2πr = 2 × 3.14 × 7.2
≈ 45.23893
11) C = 2πr = 2 × 3.14 × 10
≈ 62.83185
12) C = 2πr = 2 × 3.14 × 3.6
≈ 22.61947
13) Given :-
Diameter : 8m
Radius = half of D = 4 cm
⇢C = 2πr = 2 × 3.14 × 4
≈ 25.13274
14) Radius = 6 cm
C = 2πr = 2 × 3.14 × 6
≈ 37.69911
15) C = 2πr = 2 × 3.14 × 7.1
≈ 44.61
16) C=2πr=2× 3.14 × 5.2
≈ 32.6
[tex]\rule{300px}{.7ex}[/tex]
[tex]{\huge{\underline{\small{\mathbb{\pink{HOPE \ THIS \ HELPED \ UH:)}}}}}}[/tex]
