Question

if the slant height of a cone is 10 cm and its radius is 6cm , then find the height of cone.

Answer 1

I square = h square + r square
10 square = h square + 6 square
100 = h square + 36
h square = 100 - 36
h square = 64
h = root 64
h = 8

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Answer 2

Slant height (l) -10cm
Radius (r)- 6cm
Height (h) - ?

l =$\sqrt h^{2}+ \sqrt r^{2}$

  $h^{2}$  = $\sqrt{100-36}$

 $h^{2}$  = 64

h= 8cm.