Question

The radius of the base of a right circular cone is 3cm and its slant height is 14cm. Find its lateral surface area​

Answer 1

Answer:

Step-by-step explanation:

first we need to find out the lateral height. so,

we know r=3 and h=14, by pythagoras theorem

l=14.31 cm

now applying the

LSA= pi*r*l

= 3.14*3*14.31

=134.8002cm^2

Answer 2

To find :

We have to find the lateral surface area of a right circular cone with base's radius (r) 3cm and slant height (l) 14 cm .

Formula :

If 'r' be the radius of the circular base and 'l' be the slant height of cone .Then ,

Lateral surface area of cone(L.S.A)

[tex] = \pi \times r \times l [/tex]

Solution:

Given :

r = 3 cm

l = 14 cm

LATERAL SURFACE AREA

[tex] = \pi \times r \times l [/tex]cm^2

= 22/7 × 3 × 14

= 22 × 3 × 2

= 44 × 3

= 132 cm^2