Question

A cone has a base radius of 8cm and slant height of 12 cm. Calculate the vertical heigh

Answer 1

Answer:

slant height = 12cm

r =8 cm

l^2= r^2 + h^2

12^2 = 8^2 + h^2

144=64 + h^2

h^2 =144-64

h^2= 80

h=√80

h= √2×2×2×2×5

h= 4√5

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