Answer:

Step-by-step explanation:
Recall the form of the difference of squares.

Now let's apply it to your numbers:

Simplify:

Answer:
69.75 6975/100 92%
Step-by-step explanation:
Answer:
Radius=12cm
Diameter=24cm
Step-by-step explanation:
The diameter is the full length of the circle through the middle (which is shown in the picture as 24cm).
The radius is half of the diameter.
This is false
You need to find the surface area
The side on the right, directly across from the right angle.