Question

I need help please. Calculate the volume of a drawing.

Answer 1

Volume of rectangular prism = length x width x height
= 5x3x7
= 105
Answer is 105 km^3
=

Answer 2

The answer is:  [D]:  105 km³ .
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The volume of the figure shown in the drawing is:  105 km³ .
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Explanation: 
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To calculate the following of the figure in the drawing (rectangular prism):
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Volume (V) = B * h ; B = base area; h = height = 7 km (as shown in picture given).

The base area, "B" .   B = (5 km)*(3 km)=15 km²
(Note: The "base" is a rectangle, with a length of 5 km and width of 3 km (as shown in picture given).  

The area of rectangle  =  length * width = (5 km)*(3 km) = 15 km²
So the volume, "V" of the figure shown in the drawing =
   Base area * height  = (15 km²) * (7km) = 105 km³ ;
                              → which is answer choice: [D]._______________________________________________