Question

From a circular sheet of radius 7cm, a circle of radius 3.5 cm is removed. Find the area of the remaining sheet. (Take π = 3.14)​

Answer 1

Answer:

The area of the remaining sheet is 115.39 (cm)²

Step-by-step explanation:

Area of the bigger circle:-

Radius , R= 7cm

Area =

               $\pi R^2\\\\ =3.14 (7)^2\\ \\ =3.14(49)\\ \\ =153.86$

Area of the smaller circle:-

Radius of the small circle = 3.5 cm

Area =

             $\pi r^2\\ \\ =3.14 (3.5)^2\\ \\ =3.14 (12.25)\\ \\ =38.46 cm^2$

Area remaining= Area of large circle - Area of small circle

                         $153.86-38.46\\ \\ =115.39( cm)^2$