Answer:
$550.80
Step-by-step explanation:
Value of concrete used = volume of the prism x cost per cubic foot
volume of the prism = base area x height
the base is in the shape of a triangle
Area of a triangle = (1/2) x base x height = 1/2 x 6 x 6 = 18
Volume of the prism = 18 x 10.2 = 183.6 ft^3
183.6 x 3 = $550.80
(5, 8)
(5. – 5) down 3 units => (5, -8)
reflect x-axis => (5 , 8)
Everything is x2 itself.
5x2=10 10x2=20 20x2=40