Answer: 1st,2nd, and 4th one are correct.
Step-by-step explanation:
I think that it's an obtuse triangle.
Answer:
Step-by-step explanation:
Factorise in order to reveal factors.
2 minutes per lap. I think
Answer: Option A.
Step-by-step explanation:
You need to use this formula for calculate the surface area of the right cylinder:
Where "r" is the radius and "h" is the height.
You can identify in the figure that:
Knowing this, you can substitute these values into the formula , therefore you get that the surface area of this right cylinder is: