Question

Please do question 12...
I m ready to give u points

Answer 1

Answer:

66 cm

Step-by-step explanation:

From figure:

Let BC = R = 7 cm and AP = r = (7/2) cm = 3.5 cm.

Now,

Perimeter of shaded region = 2(Area of ARC or BSD + area of APB or CQD)

= 2(πR + πr)

= 2π(R + r)

= 2 * 22/7 * (7 + 3.5)

= 2 * 22/7 * 10.5

= 462/7

= 66 cm.

Therefore, Perimeter of shaded region = 66 cm.

Hope it helps!

Answer 2

hope this answer is helpful