Question

Find the volume and the total surface area of a cone having slant height 17 cm and base diameter 30 cm.

Answer 1

I think it is your answer

Answer 2

we know,
slant height 'l' =17cm
diameter 'd' =30cm
radius 'r'= 30/2=15cm
height 'h'= √l^2-r^2
= √17*17-15*15
=√289-225
=√64
=8cm
volume of cone= 1/3πr^2h
1/3*22/7*15^2*8
=1885.71cm^3

TSA of cone= πr(l+r)
=22/7*15(17+15)
=1508.57cm^2