Question

Q47. What is the ratio of the area of the circle to the area of its sector of 22.5 degrees?
O(A) 1:1
0 (B) 4:1
2
O (C) 8:1
O (D) 16:1​

Answer 1

Step-by-step explanation:

Medium

Answer

Circumference of a circle =8cm

central angle = 72

0

Now, circumference of a circle = 2πr

⇒8=2πr

∴r=

11

14

cm

Area of sector =

360

θ

×(πr

2

)

=

360

72

×

7

22

×

11

14

×

11

14

=1.02cm

2