The surface area would be 4021.24 since
SA = 2πr²h
SA= π(8²)(20)
= 4021.23859659 round up to 4021.24
Answer: The surface area of the ball is 15.90 in².
Step-by-step explanation:
1. The ball is spherical, therefore to calculate its surface area, you must apply the formula for calculate the surface area of a sphere, which is:

2. You can calculate the radius (
) with the diameter given in the problem, as following:

3. Substitute this value into the formula. Then, you obtain that the result is:

The option C) 49 inches is the circumference of the circular mat.
<u>Step-by-step explanation:</u>
- Tricia made a circular mat from a square piece of cloth.
- The measure of the side length of the square = 14 inches.
- The length of the side is same as the diameter of the circle.
- Therefore, the diameter of the circular mat = 14 inches.
<u>To find radius :</u>
Radius = diameter / 2
⇒ 14/2
⇒ 7 inches.
<u>To find the circumference of the circular mat :</u>
Circumference = 2πr
where,
π has the default value of 3.14
r is the radius of the circular mat.
⇒ 2 × 3.14 × 7
⇒ 44 inches.
∴ The circumference of the circular mat is 44 inches.
Since, it is not given in the option. The option C) 49 inches which is close to 44 inches is the right option.
Answer:
210
Step-by-step explanation:
the % is there to try to throw you off. all you have to do is subtract 285 by 75
which is 210
i believe thats all you do. hope this helps!
Well if there were 50 questions it would be 2 points each so if he ended up with 96% he must have missed 2 questions