Right circular cone having radius 5cm and height 12 centimetre is given. The curved surface area of the cone is *
60π cm²
65π cm²
25π cm²
144π cm²
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Answered by
1
Answer
= 65π cm^2
CSA of cone = πrl
R 5cm
H 12 CM
By Pythagoras therm
l^2= r^2+ h^2
l^2= (5)^2+ (12)^2
l^2= 25+144
l^2= 169
l= 13cm
π×5×13
65π cm^2
Answered by
1
Step-by-step explanation:
Given, height of cone = 12cm =
Base radius = 5 cm
By Pythagoras theorem,
Slant height of cone
IS{(12)^2 +(5)^2}
|= 13cm
Now , curved surface area of cone
= rl
=(22/7)*5x13
=1430/7
=204.28 square cm
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