Find The Circumference of the Circle (NEW)

1.	Find The Circumference of the Circle (NEW)
Answer» We know, C = 2πr Radius = 4 ft ∴ C = 2(3.14)(4 ft) ⇒ C = 8 × 3.14 ft ⇒ C = 25.12 ft (1st). More: Like π (pi), there are MANY irrational NUMBERS, e.g., 'e' (Euler's number), 'ϕ' (Golden ratio). Numbers like 'the root over of 2' cannot be expressed EASILY. That's what we use such number in form of 'surds'. For e.g., √3.

Answer»

We know,

C = 2πr

Radius = 4 ft

∴ C = 2(3.14)(4 ft)

⇒ C = 8 × 3.14 ft

⇒ C = 25.12 ft (1st).

Like π (pi), there are MANY irrational NUMBERS, e.g., 'e' (Euler's number), 'ϕ' (Golden ratio).
Numbers like 'the root over of 2' cannot be expressed EASILY. That's what we use such number in form of 'surds'. For e.g., √3.

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Find The Circumference of the Circle (NEW)

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