If a circle of radius (5) cm has central angle (\frac{7\pi}{10}), what is the arc length?
Advertisement
Answer and explanation
Correct answer: (\frac{7\pi}{2}) cm
(s=r\theta=5\times\frac{7\pi}{10}=\frac{7\pi}{2}) cm. In exams, put the radian angle directly in the formula.
Frequently asked questions
What is the correct answer to this question?
(\frac{7\pi}{2}) cm
Why is this the correct answer?
(s=r\theta=5\times\frac{7\pi}{10}=\frac{7\pi}{2}) cm. In exams, put the radian angle directly in the formula.
Which subject and chapter does this question cover?
This is a Class 12 Mathematics question. Chapter: Trigonometric Functions. Topic: Angles.
Advertisement