Question

If the radius of thw base of a right circular cone is 2cm and its slant height is 3.5 cm respectively then its total surface area is

Answer 1

given , radius= 2cm

slant height L= 3.5 cm

now total surface area= πrl

= 22/7×2×3.5

22cm^2

hope it help you

Answer 2

Given :

The radius of the base of a right circular cone is 2cm and its slant height is 3.5 cm respectively

To find :

Total surface area of cone

Solution:

Radius of cone = r = 2 cm

Slant height of cone = l = 3.5 cm

Total surface area of cone = $\pi r l +\pi r^2$

So,Total surface area of cone =$\frac{22}{7} \times 2 \times 3.5 + \frac{22}{7} \times 2^2=34.57$

Hence  total surface area is 34.57 sq.cm.