Question

the inner circumference of a circular track is 242 M the track is uniformly 7 M wide find the area of the track​

Answer 1

Answer:

inner radius

$2\pi \: r = 242 \\ r = 242 \times \frac{1}{2} \times \frac{7}{22} \\ r = 77 \\ \\ \\ inner \: area \\ \pi {r}^{2} = \frac{22}{7} \times 77 \times 77 \\ 18634 \\ \\ inner \: radius = 77 \\ outer \: radius = 77 + 7 = 84 \\ outer \: area = \frac{22}{7} \times 84 \times 84 \\ = 22176 \\ \\ area \: of \: path \\ 22176 - 18634 \\ = 3542(answer)$