The answer to these two problems are below
19) 9
21) 107
Answer:
840cm^2
Step-by-step explanation:
Volume: Area of cross section x length
Area of cross section:(15 x 8 + 4x 5 )
length: 6
So volume:
(15 x 8 + 4x 5 ) x 6 = 120 + 20 X 6 = 140x6 = 840cm^2.
Hope this helps.
Good Luck
This is a nice statement to know, but I see no question.
Congruent means <em>equal</em> in geometry.
So,
2x+5=4x-1
-2x=-6
x=3
Hope this helps :)