Question

from a circular region of radius 4 cm a circle of radius 3 cm is cut out find the area of the remaining part of the bigger circle​

Answer 1

Answer:

21.98 cm square area is remaining

Step-by-step explanation:

area of smaller circle is

3.14*3*3=28.26

area of bigger circle is

3.14*4*4=50.24

the remaining area is

50.24-28.26=21.98

Answer 2

22 square cms

Step-by-step explanation:

we know that area of circle=πr^2

given,

radius of bigger circle =4cm

radius of smaller circle=3cm

area of bigger circle=16π

area of smaller circle=9π

area of the remaining part of of the bigger circle=16π-9π

=7π

=7x22/7 (sinceπ=22/7)

=22square cms