Question

Calculate the surface area of a cylinder using the formula and using 3.14

Answer 1

Given that the formula to get the surface area of a cylinder is:

`SA=2\pi r^2+2\pi rh`

Method: Substitute the values of r and h into the equation

For Question A

r=radius=2m

h=height= 6m

`SA=2*3.14*2^2+2*3.14*2*6=100.48m^2`

For option A, the surface area = 100.48 square meters

For Question B

r=4cm

h=11 cm

For option B, the surface area = 376.8 square centimeters

For Question C

r=12mm

h=3mm

For Option C, the surface area= 1130.4 square millimeters