Question

I . Answer the following questions.

1. If the outer radius and inner radius of the circles are

respectively 9 m and 6 m, find the arae of the

circular pathway.

2. Find the area of a circular pathway whose outer radius is

15 cm and inner radius is 12 cm.​

Answer 1

Step-by-step explanation:

i) area of pathway = outer circle-inner circle

=9-6

=3 m

area of circle = Πr²

=22/7×9×9

=22/7×81

=12×22

=264

again area of inner circle

=22/7×6×6

=22/7×36

=5×22

=110

area of pathway=outer-inner

=264-110

=154

area of pathway =154

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