Answer:
Maths keeps one mentally active. The total surface of a hemisphere = 3(pi)r^2. So if the radius = 10 cm, then the TSA = 3(pi)r^2 = 300(pi) = 942.8571429 sq cm.
Step-by-step explanation:
hope this helps you :)
Greetings!
The expression would be:
+25= Starting # of stamps
/5= Dividing the among himself and the four friends
+2= Stamps found
Hope this helps.
-Benjamin
Answer:
First option: True.
Step-by-step explanation:
To know if the volume of this cylinder is 496.21 ft³, you need to use the formula for calculate the volume of a cylinder:

Where "r" is the radius and "h" is the height.
You can observe in the figure that the radius of the cylinder is 4.5 feet and the height is 7.8 feet.
Then, knowing this, you can substitute these values into the formula.
Therefore, the volume of this cylinder is:

Then the answer is: True.
Answer:
i believe it would be the las one im pretty sure but not 100% so hope it works and let me know if im right or not but again hope this helps
step-by-step explanation:
the second option
Step-by-step explanation:
Line CD is parallel to line AB, shown by the arrows in the middle of both of the lines.