Question

Curved surface area of a cone is 306sq.cm and it’s slant height is 14cm.Find: Radius of the base T.S.A of the cone

Answer 1

Let x cm be base radius
x * 14 * π = 306
x = 6.9573
x = 6.96 , correct to 3 significant figures
Base radius = 6.96 cm

Total surface area 
=(6.9573^2π + 306) cm^2
=458 cm^2, correct to 3 significant figures
Total surface area = 458 cm^2