Question
The total surface area of a solid right circular cone is
equal to that of a sphere of the same radius. The height of the cone is how many times the diameter of the sphere?Solution
According to the question, Ο(r + l)r = 4Οr^2 β (r + l) = 4r β l = 3r l^2 = H^2 + r^2 β 9r^2 = H^2 + r^2 β 8r^2 = H^2 β H = 2β2r Now, Diameter = 2r So, Height is 2β2r/2r = β2 times β΄ Required answer is β2
Select the most appropriate meaning of the Given idiom.
Word of mouth
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BECK AND CALL
In each question below, a sentence is given with an idiom/phrase printed in bold type. That part may contain a grammatical error. Each sentence is follo...
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The whole nine yards
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When the police arrived, the burglars ran over the back wall to escape.
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Fill in the blank with an appropriate idiom.
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