Question

If the Inner Radius of a ring is 10 cm and the bidth is 5 cm .
Find the area of the ring.
(Kisi walay ki bhitari trijya 10 cm and chaurai 5 cm hai. Walay ka area nikale.)​

Answer 1

Step-by-step explanation:

R = 15 cm

r = 10 cm

area of ring = π(R²-r²)

$\frac{22}{7} (15 + 10)(15 - 10) \\ = \frac{22}{7} \times 25 \times 5 \\ = 392.85cm {}^{2}$