What is the total surface area of a right circular cone of height 14 cm and base radius 7 cm?
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First we will calculate, slant height of cone i.e.
l .
Now, we know in right circular cone
l^2 = r^2 + h^2
l = √(7^2+14^2) = √245 = 7√5.
Now, total surface area = 22/7*7(7√5+7) = 22*7(√5+1)= 154(√5 +1) sq.cm.
l .
Now, we know in right circular cone
l^2 = r^2 + h^2
l = √(7^2+14^2) = √245 = 7√5.
Now, total surface area = 22/7*7(7√5+7) = 22*7(√5+1)= 154(√5 +1) sq.cm.
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Hope it helped.
Regards. :)
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