TBQ - Find the number of circles — task. Maths CBSE Live product, Class 8.

Observe the pattern in the figure below.

The expression

{(k + 1)}^{2} - 1

gives the number of circles at Step \(k\) of this pattern.

Use this formula to find the number of circles in Step \(15\).

Answer:

The number of circles in Step \(15\) is .

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2. TBQ - Find the number of circles