Question

Surface area of cone​

Answer 1

Answer:

Total Surface Area of cone = πrl + πr²

Answer 2

Let radius of base of cone be " r "

so we know that ,

Area of base = πr²

lateral surface area = πrl. ..{ l is a slant height}

total surface area + curved surface area + area of base of cone

so ,total surface = πrl + πr²

=> Total surface area of cone =

πr(l + r) sq. units