Calculating the surface area of a frustum
Calculate the curved surface area of the following frustums
a)
Radius of smaller cone = 4.8cm
Radius of larger cone = 8cm
b)
Radius of smaller cone = 6cm
Radius of larger cone = 10cm
r
r
r
r
c)
Calculate the whole surface area of the
frustum that is left behind when the top of a
cone is removed.
8cm
Radius of top of frustum = 6cm
Radius of base of frustum = 15cm
r
r