. Find the surface area of the following figure.

166pi cm2

130pi cm2

158pi cm2

119pi cm2

i say 130 pi

Step-by-step explanation:

it is the closest one

area = 2πrh+2πr2=2·π·5·8+2·π·52≈408.40704

for the friend request.

when a figure, such as triangle (xyz) is reflected over the line y = x to create x'y'z' the x-coordinates and y-coordinates of the original image (pre-image) will be reversed for the image. (e.g., (x, y) > (y, x)) this means that the pre-image position of the x- and y-coordinates switch places which in turn provides a mirror like image of the original xyz.  

i notice that when i draw a line segment from x to x', that the points are parallel from each other -- they are exactly across from each other and do not intersect with any other points.  

yes, think i would see the same characteristic if you drew the line segment connecting y with the reflecting line and then y' with the reflecting line because of the essence of reflections. because it is a mirror image, each point was effected the same way which leads me to conclude that they same would apply to y and y'.

answer: 414,377,008

step-by-step explanation:

just multiply it