Two circles touch internally and their centres are O and O- as shown- The sum of their areas is 180- sq cm and the distance between their centres is 6 cm- Find the diameter in cm of the larger circle-

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Standard VII

Mathematics

Construction of Concentric Circles

Two circles t...

Question

Two circles touch internally and their centres are O and O’ as shown. The sum of their areas is 180𝜋 sq cm and the distance between their centres is 6 cm. Find the diameter (in cm) of the larger circle.

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Solution

The correct option is D 24

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