Question

1.
Find the curved surface area, total surface
area,total surface area and volume of a right circular cylinder
of radius 5 m and height 1.4 m.​

Answer 1

Answer:

⇒ CSA of cylinder = $2\pi rh$

        = 2 x 22/7 x 5 x 1.4

       = 44/7 x 7

        = 44$m^{2}$

⇒ TSA of cylinder = $2\pi r(r+h)$

          = 2 x 22/7 x 5 (5+1.4)

          = 44/7 x 5 x 6.4

          = 44/7 x 32

          = 1408/7

          = 201.14$m^{2}$    

⇒ Volume of cylinder = $\pi r^{2}h$

                 = 22/7 x $5^{2}$ x 1.4

                 = 22/7 x 35

                 = 770/7

                 = 110$m^{3$

Hope this helps ya.....