Saved Bookmarks
| 1. |
Find the CSA of a cylinder whose radius is 3cm and height is 14 |
|
Answer» Answer: Given : Height of Cylinder is 14 cm . To Find : Curved SURFACE Area of Cylinder . Solution : \longmapsto\tt{Radius=3\:cm}⟼Radius=3cm \longmapsto\tt{Height=14\:cm}⟼Height=14cm Using Formula : \longmapsto\tt\boxed{C.S.A\:of\:Cylinder=2\pi{rh}}⟼C.S.AofCylinder=2πrh Putting Values : Putting Values : \longmapsto\tt{2\times\dfrac{22}{{\CANCEL{7}}}\times{3}\times{{\cancel{14}}}}⟼2×722×3×14 \longmapsto\tt{44\times{3}\times{2}}⟼44×3×2 \longmapsto\tt{44\times{6}}⟼44×6 \longmapsto\tt\bf{264\:{cm}^{2}}⟼264cm2 So , Curved Surface Area of Cylinder is 264 cm² .. _______________________ Curved Surface Area of Cylinder = 2πrh Total Surface Area of Cylinder = 2πr(r+h) Volume of Cylinder = πr²h _______________________ |
|