Answer:
A.
Diameter = 24 cm × 2 = 48 cm
Circumference =3.14×2×24 cm = 150.72 cm
B.
Radius : 40m÷2 = 20 m
Circumferencec: 40 m × 3.14 = 125.6 m
C.
Radius: 35 cm÷2 = 17.5 cm
Circumference : 35 cm × 3.14 = 109.9 cm
D.
Diameter: 34.5 m × 2 = 69 m
Circumference: 34.5m × 2 × 3.14 = 216.66 m
Formulas:
Formula for Circunference, when diameter is given:
Formula of Circumference , when radius is given:
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Answers & Comments
Answer:
A.
Diameter = 24 cm × 2 = 48 cm
Circumference =3.14×2×24 cm = 150.72 cm
B.
Radius : 40m÷2 = 20 m
Circumferencec: 40 m × 3.14 = 125.6 m
C.
Radius: 35 cm÷2 = 17.5 cm
Circumference : 35 cm × 3.14 = 109.9 cm
D.
Diameter: 34.5 m × 2 = 69 m
Circumference: 34.5m × 2 × 3.14 = 216.66 m
Formulas:
Formula for Circunference, when diameter is given:
Formula of Circumference , when radius is given: