Question

find the area of a ring whose inner and outer radii are 15 cm and 18 cm respective. (take π = 3.14)​

Answer 1

Answer:

pi 18^2- pi 15^2

3.14(324-225)

3.14*99

310.86

Answer 2

Answer:

Area of ring=π(R^2-r^2)

=3.14(18^2-15^2)

=3.14(99)

=310.86