Question

The curved surface area of a cone is 306 cm² and its slant height is 14 cm. Find:
(i)the radius of the base
(ii) total surface area of the cone

Answer 1

Step-by-step explanation:

curved surface area of cone=306cm²

slant height=14cm

curved surface area=πrl

22/7*14*r=306cm²

44r=306

r=306/44

r=76.5cm

total surface area=πr(l+r)

22/7*765/10(14+765/10)

11/7*153(90.5)

11/7*153*90.5