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If the diameter of A is 12cm and the other side B is 7cm what is the ratio |
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Answer» Step-by-step explanation: Height (h) of cylindrical part = height (h) of the conical part =7 cm Diameter of the cylindrical part =12 cm Therefore, Radius (r) of the cylindrical part = 2 12
=6 cm So, Radius of the conical part =6 cm Slant height (l) of conical part = r 2 +h 2
cm = 6 2 +7 2
= 36+49
= 85
≈9.22 cm. The total SURFACE area of the remaining solid = CSA of the cylindrical part + CSA of the conical part + Base area of the circular part =2πrh+πrl+πr 2
=2× 7 22
×6×7+ 7 22
×6×9.22+ 7 22
×6×6 =264+173.86+113.14 =551 cm 2
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