Hello there!
Number 1 is C (11, 4) Image is below
I don't know number 2, so so sorry!
Number 3 is A. 36 The formula for perimeter of a rectangle is (2 * base) + (2 * height)
The base = 13
The height = 5
(5 * 2) + (13 * 2)
10 + 26 = 36
Number 4 is 23 units.
I hope I was of assistance!
~ Fire
Answer:
10
Step-by-step explanation:
√81 = 9 (9+9-4*2)
4 * 2 = 8 (9+9-8)
9 + 9 = 18 (18 - 8)
18 - 8 = 10
A. Bc a negative times a negative would be positive
C. Bc it would equal 0 and zero is not negative.
1*-7=-7 it wants a negative value so times it by one keeps it negative and same with if it is Multiplied by 7
Answer:

Step-by-step explanation:
The volume of the pyramid is given by:

where
is the area of the base and
is the height.
We know that the height is:

Thus we need to find the area of the square at the base.
The perimeter of the square is:

this means that the length of the sides of the square is :

Now we can find the area of the base which the area of the square:

and finally we find the volume:


Which rounded to the nearest tenth of a cubic centimeter is: 