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# Calculate the perimeter of a sector of a circle of radius 9cm…

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**Calculate the perimeter of a sector of a circle of radius 9cm and angle 36****°**

**A. 18cm****B. (18 + 9π/5) cm****C. (9 + 9π/5) cm****D. 9π/5 cm**

**QUICK ANSWER…**

**B**

**SOLUTION****… **** **

**The perimeter of any shape is the total length of all the sides of the shape. That is, assuming a shape is stretched to form a straight line, the length of this line is called the perimeter of the shape.**

**For this question, we have a sketch:**

**Now for the right answer to the above question:**

**Option A is incorrect.****Option B is correct.****C is incorrect.****D is not the correct answer.**

**QUICK TIPS…**

**You may please note the****se/this****:**

**Always remember that the perimeter of any shape is the total length of its outline.**

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**/**** ****culled from ****201****6 ****JAMB-UTME ****mathematics past ****question**** 24 ****/**