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brasilyejipark2537
13.10.2019 •
Mathematics
Find the volume of cubical box . if the cost of painting of outer surface is rs 1440 at the rate rs 15 per mcube
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Ответ:
1)We have to calculate the surface of this cubical box.
Rate=cost of painting / surface ⇒surface=cost of painting/rate
Data:
Rate=$15/m²
cost of painting=$1440
Surface=$1440/($15/m²)=96 m²
2)We find out the length of the side:
Surface of a cubical box=6(side²)
Data:
Surface of a cubical box=96 m2
Therefore:
96m²=6 (side²)
side²=96 m²/6
side²=16 m²
side=√(16 m²)=4 m
3) We find the volume of a cubical box.
volume=(side³)
volume=(4 m)³
volume=64 m³
the volume of this cubical box would be 64 m³.
Ответ:
ABCD is reflected about the x-axis to form AxBxCxDx and reflected about the y-axis to form AyByCyDy When ABCD is reflected about EF the image is AEFBEFCEFDEF.
Step-by-step explanation: