Question

The perimeter of a sector of a circle of radius 8cm is 25cm.what is area of sector?​

Answer 1

Answer:

Let,

L be the length of the arc of the sector,

Now, we know that,

So,

L = 25 - 2×8

= 25 - 16

= 9 cm.

Area of full circle of radius 8 cm is

= π

= 8×8×π

Circumference of the full circle = 2πr

= 2×π×8

=> 36 cm. ( by cancelling π and 8)

Hope this helps you.