The slant height of the frustum of a cone is 5cm.If the difference of the radii ofvits two circular ends is 4cm,find the height of the frustum
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Answer:
Step-by-step explanation:
slant height of frustum=5
R-r=4
l²=h²+(R-r) ²
5²=h²+(4) ²
25=h²+16
25-16=h²
9=h²
h=-3, +3
As height can't be negative
H=+3
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