Question

slant height of frustum of cone is 5 cm if difference between their radii is 4 cm find height of frustum​

Answer 1

Answer:

hey here is your answer

h=3cm

r Radius

4

cm

l Slant height

5

cm

Using the formula

l=r2+h2

Solving forh

h=l2﹣r2=52﹣42=3cm

hope it help you

Answer 2

$\sf{{l}^{2} = {h}^{2} + {(r1 - r2)}^{2} }$

$\sf{{5}^{2} = {h}^{2} + {4}^{2}}$

$\therefore$ $\sf{h = \sqrt{25 - 16} = \sqrt{9} = 3cm}$