Question

Please help! I need this to pass. If you are trying to get points please just chose a different question and don't mess with mine. I am in a state of trouble and I just need a helping hand.

Answer 1

The correct answer to the exercise is:

• Surface area of a circle = 633.1
  `mm^(2)`

Explanation:

To obtain the surface area of a circle, you can use the formula:

1. Surface area of a circle = π *
   `r^(2)`

Where:

• π = 3.14 (the exercise give this)
• r = Circle radius.

How you can see, in the picture gives you a straight line that passes through the circle side by side, the circle radius is half of that value, then:

• r = 28.4 mm / 2
• r = 14.2 mm

Now, we can replace the values in the first formula:

• Surface area of a circle = π *
  `r^(2)`

• Surface area of a circle = 3.14 *
  `(14.2 mm) ^(2)`

• Surface area of a circle = 3.14 * 201.64
  `mm^(2)`

• Surface area of a circle = 633.1496
  `mm^(2)`

• Surface area of a circle = 633.1
  `mm^(2)` (rounded to the nearest tenth).