Question

Find the diameter of a wheel whose circumference is 75 3/7 cm .​

Answer 1

$circumference = 2\pi \: r \\ 75 = 2 \times \frac{22}{7} \times r \\ 75 = \frac{44}{7} \times r \\ r = 75 \times \frac{7}{44} \\ r = 11.9 \\ d = 2r \\ d = 2 \times 11.9 \\ d = 23.8 \: cm$