Answer:


Step-by-step explanation:
a. Area is calculated by summing the areas of the prism's individual surfaces.
#First, calculate the areas of the right-angled surfaces:

#We then find the areas of the rectangular surfaces:

#We sum the areas to find the total surface areas:

Hence, the prism's surface area is 
b.Area is calculated by summing the areas of the prism's individual surfaces.
#First, calculate the areas of the right-angled surfaces:

#We then find the areas of the rectangular surfaces:

#We sum the areas to find the total surface areas:

Hence, the prism's surface area is 
There is 180 degrees on a straight line so you can work out the unnamed angle in the triangle by doing 180-115 which is 65
There are also 180 degrees in a triangle so to work out y you do 180 - (65+85) = 30
So y = 30 degrees
Answer:
21.2 in.
Step-by-step explanation:
(4)(3.14)(1.3^2) = 21.2
1st, find the mean of all values. 1+2+3+4=10 10/4=2.5 The mean is 2.5.
2nd, find the distance of each value from the mean. So 2.5-1=1.5; the distance between 1 and 2.5 is 1.5. Repeat it for all of them, and you get 1.5, .5, .5, and 1.5.
3rd, you take each distance and find the mean. 1.5+.5+.5+1.5=4 4/4=1 The mean deviation is 1.
Answer:
7. -7/4, 8. 2, 9. (4, 2), 10. (-2, 3)
Step-by-step explanation:
is the equation that will be used for 7 and 8