Thrice the length of the diameter of a circle is 10 cm less than its circumference. What is the radius of the circle? [Use π = $\frac{22}{7}$]

28 cm 14 cm 70 cm 35 cm

35 cm

We know that, Circumference of a circle =2πr Given that,  3d = circumference - 10 cm = as diameter = 2 radius = 3 × 2r = 2πr -10  = 6r = 2× \(\frac{22}{7}\)× r - 10  = \(\frac{44}{7}\)r - 6r = 10  = \(\frac{2r}{7}\)= 10   r = 35cm