2. If the perpendicular height of a cone is 4cm and the radius of its base is 3cm.
Find a) its slant height b)Curved surface area. (Do not substitute for T)
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Answer:
a) Slant height= 5 cm
b) Curved surface area= 47.1 cm²
Step-by-step explanation:
a)
l²= r²+h²
l²= 3²+4²
l²= 9+16
l²= 25cm²
l= 5cm
b) CSA = πrl
= 3.14×3×5
= 47.1 cm²
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