Find the Curved Surface Area $CS A$ of a cone if radius $r = 3 cm$ and height $h = 5 cm$ .

Answer

$334 π cm^{2}$

Explanation

STEP 1: find side $l$

To find side $l$ use Pythagorean Theorem:

r^{2} + h^{2} = l^{2}

After substituting $r = 3 cm$ and $h = 5 cm$ we have:

(3 cm)^{2} + (5 cm)^{2} = l^{2}

9 cm^{2} + 25 cm^{2} = l^{2}

l^{2} = 34 cm^{2}

l = 34 cm^{2}

l = 34 cm

STEP 2: find Curved Surface Area $CS A$

To find Curved Surface Area $CS A$ use formula:

CS A = l \cdot r \cdot π

After substituting $r = 3 cm$ and $l = 34 cm$ we have:

CS A = 34 cm \cdot 3 cm \cdot π

CS A = 34 cm \cdot 3 cm \cdot π

CS A = 334 π cm^{2}

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Find the Curved Surface Area CSA of a cone if radius r=3cm and height h=5cm.

334​πcm2

Find the Curved Surface Area $CS A$ of a cone if radius $r = 3 cm$ and height $h = 5 cm$ .

$334 π cm^{2}$