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Q.1 Find the total surface area of cone , if it's height is 21 m and diameter of base is 24 m
Q.2 The Radius of base of conical tent is 12m , The tent is 9 m high . Find the cost of canvas required to make the tent , if one square meter cost Rs 120
Solve these both question
Answers
Answered by
13
Heya.........!!!!!
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Ans.1 )) => Given in the question :
• Length = 21 m
• Radius = 12 m
Total Surface area = πr ( r + l )
=>> 22/7 × 12 × 33
➡➡ 1244.56 m^2
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Ans.2 )) => Given in the question :--
• Radius = 12 m
• Height = 9 m
We know that slant height is =
=> l^2 = r^2 + h^2
=> l^2 = 144 + 81 = 225
=> l = 15 m
Curved surface area = πrl = 31.4 × 12 × 15
➡ =>> 565.2 m^2
➡➡ Cost = 565.2 × 120 => Rs 67824 .
______________________________
Hope It Helps You ^_^
_______________________________
Ans.1 )) => Given in the question :
• Length = 21 m
• Radius = 12 m
Total Surface area = πr ( r + l )
=>> 22/7 × 12 × 33
➡➡ 1244.56 m^2
________________________________
________________________________
Ans.2 )) => Given in the question :--
• Radius = 12 m
• Height = 9 m
We know that slant height is =
=> l^2 = r^2 + h^2
=> l^2 = 144 + 81 = 225
=> l = 15 m
Curved surface area = πrl = 31.4 × 12 × 15
➡ =>> 565.2 m^2
➡➡ Cost = 565.2 × 120 => Rs 67824 .
______________________________
Hope It Helps You ^_^
Answered by
41
the answer of 2nd question is rs 67824
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