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Maths / Surface Area and Volume / Total Surface Area of Cone
QUESTION
 

A right circular cone has base diameter 10 cm and height 12 cm. Determine the total surface area.

OPTIONS
A. 

large 282.76cm^2

B. 

large 282.80cm^2

C. 

large 292.86cm^2

D. 

large 282.86cm^2

Right Option : D
EXPLANATION
Explain TypeExplanation Content
Text

large l=sqrt{r^2+h^2}=sqrt{5^2+12^2}=sqrt{25+144}

large l=sqrt{169}=13cm

Total surface area of cone = large pi r(r+l)

large =frac{22}{7} times 5times (5+13)=282.86cm^2

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