Question

the surface area of a solid cylinder of radius 2 cm and height 10 cm is equal to dash millimetre square

Answer 1

surface area of cylinder = 2 x 3.1416 x r x h + 2 x 3.1416 x r^2 = 150.8 sq. cm (approx)

converting to mm : 150.8 sq. cm = 150.8 x 100 sq mm = 15080 sq mm

Answer 2

Answer:

Surface are of the cylinder, S = 15079.64 mm²

Explanation:

Given that,

Radius of the cylinder, r = 2 cm = 20 mm

Height of the cylinder, h = 10 cm = 100 mm

The surface area of the cylinder is given by :

$S=2\pi r^2+2\pi rh$

$S=2\pi (20)^2+2\pi 20\times 100$

S = 15079.64 mm²

So, the surface area of a solid cylinder of radius 2 cm and height 10 cm is equal to 15079.64 millimeter square.