Question

CSA of cone whose radius 16m and height 12 m

Answer 1

CSA=πrl
=(22/7*12*16)cm^2
=603.4285cm^2
=603cm^2(approx.)

Answer 2

GIVEN :

• RADIUS AND HEIGHT OF CONE ARE 16 m AND 12m

TO FIND :

• CURVED SURFACE AREA (CSA) OF CONE

SOLUTION :

SLANT HEIGHT OF CONE BE 'l'

IN A CONE ,

$l {}^{2} = {r}^{2} + {h}^{2} \\ \\ = > {l}^{2} = 256 + 144 \\ \\ = > {l}^{2} = 400 \\ \\ = > l = 20m$

$curved \: surface \: area \: (csa)of \: cone \: = \pi rl \\ \\ = \frac{22}{7} \times 16 \times 20$