Question

Find the inner and outer circumference of the given figure. Also find the area between two circles.
14 cm
PO
7cm​

Answer 1

Answer:

MARK ME BRAINLIST AND FOLLOW ME TO KNOW MORE ANSWER FOR UR QUESTIONS

Step-by-step explanation:

Given: Radius of inner circle =7 cm

Radius of outer circle =14 cm

Angle made by sector = 40 degree

Area of sector OAC = 40

--------- ×πr2

360

= 1. 22

--- ××. ------ × 7square. =68.44

9. 7

Area of sector OBD = 40

-------. ×πr2

360

1. 22

=-----××-----× 7square = 17.11

9. 7

Area of the small region ABDC

= Area of the small sector OAC – Area of the small sector OBD =(68.44−17.11)cm2

Area of shaded region ABDC= Area of outer circle − Area of inner circle − area of small region ABCD

Area of shaded region ABDC=π×14sqr−π×7sqr

−(68.44−17.11)cm2

Area of shaded region ABDC=410.484 cm2