6th Class
Mathematics
Sample Paper
Maths Olympiad Model Test Paper-16
question_answer
Two circles are concentric whose common centre is O. Daimeter of outer circle is 42 cm. if the area of outer circle including inner circle is \[2618\,\,c{{m}^{2}}\]and area of shaded ring is \[1232\,\,c{{m}^{2}}\], then find the diameter of the inner circle.