if the radius is 21 cm and central angle is 120° then the length of the arc 15 ___
Answers
Answered by
3
Answer:
Given ▒▒
In a given circle,
The radius of the sector is 21 cm and its central angle is 120°.
r = 21 cm
θ = 120°
▒▒ To Find ▒▒
The length of the arc of a circle.
▒▒ Solution ▒▒
\boxed{\bf{Length\ of\ the\ arc =\frac{\theta}{360^\circ} \times 2\pi r}}
Length of the arc=
360
∘
θ
×2πr
→ L = 120°/360° × 2π(21)
→ L = 1/3 × 2 × 22/7 × 21
→ L = 1/3 × 2 × 22 × 3
→ L = 2 × 22
→ L = 44 cm
Therefore, the length of the arc of the circle is 44 cm.
Step-by-step explanation:
please mark me branliest answer
Similar questions