Question

total surface area of cone of radius 7m and slant height 25m is

Answer 1

Answer:

Given:

Slant height =25m

Base Diameter = 14m

We know that slant height is = h2+r2=25, 

By putting in the given values we got;

h2+72=625

h2=576

h=24 m

Total surface are of cone = Base area + curved surface area

=πr2+πrl

=722×72+722×7×25

=704m2