Answer:
21
Step-by-step explanation:
So, factors of 6 that are between 17 and 25 are 18 and 20, so that's not the numbers.
Multiples of 3 are 18, 21, and 24.
The only number that would be reasonable enough is 21, because it is a multiple of 3 and is not a factor of 6.
Answer:
I think its going to be (b)
One as it intersects only on the Y axis
You need to determine how much paper you need to cover the lateral side of the cylinder shown in the picture. For this, you have to calculate the surface area of the cylinder, which you can do using the following formula:

Where
A is the area
π is the number pi, for the calculations we usually use up to the first two decimal values of this number, 3.14
r is the radius
h is the height of the cylinder
The given cylinder has a height of h=15m and a diameter of d=6m
To calculate the lateral area you need to use the radius. The diameter is twice the radius, so to determine the radius of the cylinder you have to divide the diameter by 2

Now you can calculate the lateral area as follows:

Charlie will need 282.6 m² to cover the lateral side of the cylinder.
I think 710 is the answer
266+266+89+89= 710