Answer:
Base 1 = 10 ft
Base 2 = 13 ft
Height of the Trapezoid = 7 ft
Area of the Trapezoid = 80.5 ft²
Volume of the Trapezoidal Prism = 1,207.5 ft³
Step-by-step explanation:
The given diagram shows a trapezoidal prism, consisting of two congruent trapezoid bases and rectangular or parallelogram faces connecting them.
[tex]\dotfill[/tex]
Bases of the Trapezoid
A trapezoid is a quadrilateral with at least one pair of parallel sides. The parallel sides are called the bases of the trapezoid, and the non-parallel sides are called the legs.
In this case, the parallel sides (bases) of the trapezoid base of the prism measure 10 ft and 13 ft, so:
[tex]\Large\boxed{\textsf{Base 1} = 10 \sf \; ft}[/tex]
[tex]\Large\boxed{\textsf{Base 2} = 13 \sf \; ft}[/tex]
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Height of the Trapezoid
The height of a trapezoid is the perpendicular distance between the two parallel bases of the trapezoid. As the leg of the trapezoid that measures 7 ft is perpendicular to both the bases, this is the height of the trapezoid. Therefore:
[tex]\Large\boxed{\textsf{Height of the Trapezoid} = 7 \sf \; ft}[/tex]
[tex]\dotfill[/tex]
Area of the Trapezoid
The formula to the area of a trapezoid is:
[tex]\boxed{\begin{array}{l}\underline{\textsf{Area of a trapezoid}}\\\\A=\dfrac{1}{2}h(b_1+b_2)\\\\\textsf{where:}\\ \phantom{ww}\bullet\;\textsf{$A$ is the area.}\\ \phantom{ww}\bullet\;\textsf{$b_1$ and $b_2$ are the parallel sides (bases).}\\\phantom{ww}\bullet\;\textsf{$h$ is the height (perpendicular to the bases).}\end{array}}[/tex]
Therefore, to find the area of the trapezoid, substitute b₁ = 10, b₂ = 13 and h = 7 into the area formula:
[tex]A=\dfrac{1}{2} \cdot 7(10+13)\\\\\\A=\dfrac{1}{2} \cdot 7(23)\\\\\\A=\dfrac{1}{2} \cdot 161\\\\\\A=80.5\; \sf ft^2[/tex]
So, the area of the trapezoid is:
[tex]\Large\boxed{\textsf{Area of the Trapezoid} =80.5 \sf \; ft^2}[/tex]
[tex]\dotfill[/tex]
Volume of the Trapezoidal Prism
To find the volume of a prism, we multiply the area of one of its bases by its height.
In this case, the area of the base of the prism is the area of the trapezoid (80.5 ft²) and the height of the prism is 15 ft. Therefore:
[tex]V=\textsf{Area of base}\times \textsf{Height}\\\\V=80.5 \times15\\\\V=1207.5\; \sf ft^3[/tex]
So, the volume of the trapezoidal prism is:
[tex]\Large\boxed{\textsf{Volume of the Trapezoidal Prism} =1207.5 \sf \; ft^3}[/tex]