Question

Calculate in terms of the the total surface area of a solid cylinder of radius 3cm and height 4cm

Answer 1

Let the radius of cylinder be r and heigth be h

Total surface area of cylinder =2πrh+2πr²

⇒Total surface area of cylinder = 2πr(r+h)

Now,

⇒Total surface area = 2×π× 3 (3+4)

$\small \bold{⇒Total \: surface \: area = 2×\frac{22}{7} \times 3 \times 7 }$

⇒Total surface area = 2×22×3 = 132cm²