Volume of the prism is the area of the triangle x the height.
To find the height find the area of the triAngle first, then divide the volume by the area.
Area = 1/2x 7x18 = 63 square mm
X = 1638/63
X = 26 mm
What’s the question ? that’ll help us know !
use the distance formula

You ll need to do it t times:
x1 y1 x2 y2
(-1, 5) (4, 2) = (-1, 5) (4, 2)
(4, 2) (0,0)
(0,0) (5,5)
(5,5) (-1, 5)
then add all your results
David would need 22 bags.
(78 - 12) <span>÷ 3 = 22</span>