I got -78.12, because I need 20 characters
10. A 288cm^2
11. C 52
12. D 110 pi
13. A 15 Explanation because to me this what the most tricky lateral area is the surface area of all the side but the top and bottom. The top and bottom faces of a rectangular prism are the same so if you now the surface area and the lateral surface area subtract them you get 30 that is the top and bottom faces area. half that you get 15 that is 1 face.
Answer:
THE FOURTH VERTEX (6,5)
TAKE A COMPASS PUT THE POINTED ON THE (0,8) AND PENCIL ON (4,-4)
AND MEASURE IT AND PUT THE THE COMPASS AGAIN ON (0,8) WITHOUT CHANGING LENGTH OF COMPASS AND CUT AN ARC IN FIRDT QUADRANT..
NOW FROM (0,8) EXTEND THE COMPASS TILL (-2,-2)
AND TAKING THE SAME LENGTH AGAIN CUT AN ARC IN FIRST QUADRANT
AND SEE THE POINT WHERE BOTH ARC INTERSECT...THIS WILL BE THE FOURTH SIDE..
I think that the answer is D. Although, i am not totally sure.
I hope I've helped.
X+10=18. |-10 from both sides
x+10-10=18-10
x=8
