Question

find the area of ring whose inner and outer radii are 15cm and 18cm respectively

Answer 1

area of ring - 22/7 ( 18^2 - 15^2 ) - 22/7 x ( 324 -225) - 22/7 x99 - 311.1 sq cm

Answer 2

Answer:

310.86 cm.

Step-by-step explanation:

first we will find out the area

so the area of circle is πr2

the value of π is

3.14(15^2 - 18^2)

answer will come =310.86 cm

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