Question

from a circular sheet of redius 4 cm , a circle of a redius 3 cm is cut off. find the area of remaining sheet.​

Answer 1

Answer:

Area of circle with r = 4cm

$\pi {r}^{2}$

22/7×4²

22/7×16

352/7 cm².........(i)

$\pi {r}^{2}$

Area of circle with r = 3cm

22/7×3²

22/7×9

198/7 cm²....... (ii)

Now area of remaining part is (ii) – (i)

352/7 – 198/7

154/7

22 cm²

Hope you got it....

Answer 2

Answer:

Area of circle with r = 4cm

\pi {r}^{2}πr

2

22/7×4²

22/7×16

352/7 cm².........(i)

\pi {r}^{2}πr

2

Area of circle with r = 3cm

22/7×3²

22/7×9

198/7 cm²....... (ii)

Now area of remaining part is (ii) – (i)

352/7 – 198/7

154/7

22 cm²