In this page length of arc question4 we are going to see quiz on the
topic length of arc. First we are going to see solution of question 4.

** Length of arc = (θ/360) x 2Πr**

here θ - angle formed by two radius

r - radius

Now we are going to see solution of question 1 based on this formula.

**Question 1 :**

**Find the length of arc whose radius is 42 cm and central angle is 60**°

**Question 2 :**

**Find the length of arc whose radius is 21 cm and central angle is 120**°

**Question 3 :**

**Find the length of arc whose radius is 35 cm and central angle is 72**°

**Question 4 :**

**Find the length of arc whose radius is 10.5 cm and central angle is 36**°

**Solution :**

Length of arc = (θ/360) x 2 Π r

Here central angle (θ) = 36° and radius (r) = 10.5 cm

= (36°/360) x 2 x (22/7) x 10.5

= (1/10) x 2 x (22/7) x 10.5

= (1/5) x (22/7) x 10.5

= (22/7) x 2.1

= 22 x 0.3

= 6.6 cm

**Therefore length of arc = 6.6 cm**

**Question 5 :**

**Find the length of arc whose radius is 14 cm and central angle is 5**°

**Question 6 :**

**Find the length of arc whose radius is 28 cm and central angle is 90**°

**Question 7 :**

**Find the length of arc whose radius is 14 cm and central angle is 288**°

**Question 8 :**

**Find the length of arc whose radius is 10.5 cm and central angle is 45**°

**Question 9 :**

**Find the length of arc whose radius is 35 cm and central angle is 18**°

**Question 10 :**

**Find the length of arc whose radius is 35 cm and central angle is 35**°

These are the questions in the page length of arc worksheets.

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