Question

TIMED!!!

Answer 1

Answer: 1080

Step-by-step explanation:

Answer 2

Answer: Last option.

Step-by-step explanation:

The total amount of concrete in the ramp ($V_t$) will be the sum of the volume of the  rectangular prism ($V_{rp}$) and the volume of the triangular prism ($V_{tp}$)

$V_t=V_{rp}+V_{tp}$

The formulas are:

$V_{rp}=lwh$

Where "l" is the lenght, "w" is the width and "h" is the height.

 $V_{tp}=\frac{bhl}{2}$

Where "l" is the lenght, "b" is the base and "h" is the height.

Substituting, we get:

$V_t=V_{rp}+V_{tp}\\\\V_t=lwh+\frac{bhl}{2}\\\\V_t=(18in)(6in)(6in)+\frac{(8in)(6in)(18in)}{2}\\\\V_t=1,080in^3$