Question

Find the total surface area of a cone whose base diameter is 8.4 cm and slant

height is 14.2 cm​

Answer 1

Step-by-step explanation:

50

=

π(14)(50)=

2200cm

2

πr(r+

l)=

π(14)(14+

50)=

2816cm

2

=

radius= 14

2

r 2

=

91cm

=

π(35)(91)=

10010cm

2

=

πr(r+

l)cm

2

=

π(35)(35+

91)=

13860cm

2

Answer 2

Step-by-step explanation:

r = 4.2

l = 14.2

total surface area of cone =

$\pir: {l + r}$

SO T.S.A. = 22/7*4.2(14.2+4.2)

= 13.2 * 18.4

= 242.88

its ur answer