Mathematics
Find the area of the circle, length of whose circumference is equal to the sum of the lengths of the circumferences with radii 15 cm and 13 cm.
Related Questions
A bicycle wheel, diameter 56 cm, is making 45 revolutions in every 10 seconds. At what speed, in kilo metre per hour, is the bicycle traveling ?
A roller has a diameter of 1.4 m. Find :
(i) its circumference
(ii) the number of revolutions it makes while traveling 61.6 m.
A piece of wire of length 108 cm is bent to form a semicircular arc bounded by its diameter. Find its radius and area enclosed.