Question

THERE ARE TWO SEMICIRCLES OF DIAMETER 14 CM.CAN YOU TELL THE AREA OF THE BOTH SEMICIRCLES?​

Answer 1

Answer:

The radius of semi circle ARC is 7cm

The radius of semi circle APis3.5cm

The perimeter of curve is given as ARC+CQD+DSB+APB

7

22

×7+

7

22

×3.5+

7

22

×3.5+

7

22

×7

7

22

(21)=66cm

The area is given as ar(ARC)−ar(APB)+ar(BSD)−ar(CQD)

7

22

×7

2

−

7

22

×3.5

2

+

7

22

×7

2

−

7

22

×3.5

2

7

22

×(49+49−12.25−12.25)=

7

22

×73.5

22×10.5=231cm

2

Answer 2

⇨The radius of semi circle ARC is 7cm

⇨The radius of semi circle APis3.5cm

⇨The perimeter of curve is given

as ARC+CQD+DSB+APB722×7+722×3.5+72

2×3.5+722×7722(21)=66cm

⇨The area is given as ar(ARC)−ar(APB

)+ar(BSD)−ar(CQD)722×72−722×3.52+722×72−722×3.52722×(49+49−12.25−12.25)=722×73.522×10.5=231cm2.

HOPE IT HELPS YOU..✔..