Until 2014, the mass of a kilogram was defined as exactly equal to the mass of a special
platinum-iridium cylinder kept in Sèvres, France. The cylinder's diameter and height are
both 39.2 millimeters.
What is the surface area of this cylinder?

7241.25 mm squared

Step-by-step explanation:

The surface area of a cylinder is denoted by: , where r is the radius and h is the height.

Here, we know that the diameter is 39.2 mm, and since diameter is twice the radius, then r = d/2 = 39.2/2 = 19.6 mm. We also know that the height is 39.2 mm, so plug these values in:

mm squared

The answer is about 7241.25 mm squared.

just take the area of the square and then the area of the circle then subtract the circle area from the squares area

step-by-step explanation:

the correct answer is 1: 2

step-by-step explanation:

hope this your welcome : )