Area of piece of a canvas is 1105 m2. A conical tent is to be made by canvas with base area 616 m2. Assuming that all the stiching margins and the wastage incurred while cutting, amounts to approximately 5 m2, then the height of the tent is -

• A. 20.71 m
• B. 24 m
• C. 18.20 m
• D. 21 m