Skip to content
Philoid
Browse Saved
Back to chapter
Maths
15. Areas Related to Circles
Home · Class 11 · Maths · Ref. Book · 15. Areas Related to Circles
Prev
Next
Q2 of 68 Page 15

Find the angle subtended at the centre of a circle of radius 5cm by an arc of length cm.

Arc length =


Radius of circle = 5cm


Formula:


Arc length = r×q


r = radius of circle


q = angle subtended by arc at the center




More from this chapter

All 68 →
19

The area enclosed between the concentric circles is 770cm2. If the radius of the outer circle is 21cm, find the radius of the inner circle.

1

Find, in terms of, the length of the arc that subtends an angle of 30° at the centre of a circle of radius 4cm.

3

An arc of length 20π cm subtends an angle of 144° at the centre of a circle. Find the radius of the circle.

4

An arc of length 15cm subtends an angle of 45° at the centre of a circle. Find in terms of, the radius of the circle.

Questions · 68
15. Areas Related to Circles
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 1 2 3 4 5 6 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 1 1 2 3 4 5 1 2 3 4 5 6 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Back to chapter
About Contact Privacy Terms
Philoid · 2026
  • Home
  • Search
  • Browse
  • Quiz
  • Saved