1.

A running track is enclosed between two concentric circles of radii 40m and 37m. Find the area of the running track

Answer»

Step-by-step explanation:

\pi { {r }^{1} }^{2}  - \pi { {r}^{2} }^{2}

3.14×1600-3.14×1396

=5024-4298.66

=725.34



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