How long is the arc intersected by a central angle of pi/2 radians in a circle with a radius of 4.5 cm? Round your answer to the nearest tenth. Use 3.14 for pi.
Solution:
Given, θ = π/2 and r = 4.5 cm
We have, arc length, s = rθ
∴ s = 4.5 × (π/2)
= (4.5 × 3.14) / 2
= 7.065
= 7.1 cm ( nearest tenth)
How long is the arc intersected by a central angle of pi/2 radians in a circle with a radius of 4.5 cm? Round your answer to the nearest tenth. Use 3.14 for pi.
Summary:
The arc length intersected by a central angle of pi/2 radians in a circle with a radius of 4.5 cm is 7.1 cm.
