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delphinelilly2846
21.10.2020 •
Mathematics
Rewrite the expression
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Ответ:
When the dimensions are doubled, the volume is eight times the original volume.
Step-by-step explanation:
Volume of rectangular prism is given by
volume = length * width * height.
Given
Dimension of prism 5 cm by 7 cm and a height of 12 cm
Volume of prism = 5 * 7* 12 = 420 cubic cm.
If all the sides are doubled them dimension are
5*2 cm= 10 cm
7*2 cm= 14 cm
12*2 cm= 24 cm
Thus , new volume = 10*14*24 cubic cm = 3,360 cubic cm
3,360 cubic cm can be written as 420* 8 cubic cm
3,360 cubic cm = 420* 8 cubic cm
Thus, option 4 i.e When the dimensions are doubled, the volume is eight times the original volume is correct option.