What is the slant height of a cone if its base radius and height are 3 cm and 4 cm respectively?

3 cm

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5 cm

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4 cm

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2 cm

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Solution

The correct option is B 5 cm
Given,

Base radius = 3 cm
Height = 4 cm

We know that,
$l^{2} = h^{2} + r^{2}$
$\Rightarrow l^{2} = 4^{2} + 3^{2}$
$\Rightarrow l^{2} = 25$
$\Rightarrow l = 5$ cm

$∴$ Slant height of the cone is 5 cm.

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What is the slant height of a cone if its base radius and height are 3 cm and 4 cm respectively?

The correct option is B 5 cmGiven, Base radius = 3 cm Height = 4 cm We know that, l2=h2+r2 ⇒l2=42+32 ⇒l2=25 ⇒l=5 cm ∴ Slant height of the cone is 5 cm.

The correct option is B 5 cm
Given,

Base radius = 3 cm
Height = 4 cm

We know that,
$l^{2} = h^{2} + r^{2}$
$\Rightarrow l^{2} = 4^{2} + 3^{2}$
$\Rightarrow l^{2} = 25$
$\Rightarrow l = 5$ cm

$∴$ Slant height of the cone is 5 cm.