Note Use π=227, unless stated otherwise.Find the total surface area of a cone, if its slant height is 21 m and diameter of its base is 24 m.

Note Use π=227, unless stated otherwise.Find the total surface area o

1.	Note Use π=227, unless stated otherwise.Find the total surface area of a cone, if its slant height is 21 m and diameter of its base is 24 m.
Answer» Note Use $π = \frac{22}{7}$ , unless stated otherwise. Find the total surface area of a cone, if its slant height is 21 m and diameter of its base is 24 m.