One mark exercise problems — task. Mathematics State Board, Class 7.

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1. The formula to find the area of the circular path is

\(2 \pi r^2 \ sq. \ units\)
\(\pi r^2 \ sq. \ units\)
\(\pi r^2 + 2r \ sq. \ units\)
\(\pi(R^2 - r^2) \ sq. \ units\)

2. The formula used to find the area of the rectangular path is

\(\pi(R^2 - r^2) \ sq. \ units\)
\((L \times B) - (l \times b) \ sq. \ units\)
\(LB \ sq. \ units\)
\(lb \ sq. \ units\)

3. The formula to find the width of the circular path is .

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