Answer:
D, E and F
calculating the volume of regular bodies like prims works by multiplication alone.
you need some addition for surface area and for more complicated bodies that when the volume can't be calculated in one step
Answer:
50
Step-by-step explanation:
2x25=50-5=45
We know that the formula for the volume of a box is:
![V =lwh](https://tex.z-dn.net/?f=V%20%3Dlwh)
Where:
l = length
w = width
h = height
The formula of the surface area of a box is:
![SA=2(lw+lh+wh)](https://tex.z-dn.net/?f=SA%3D2%28lw%2Blh%2Bwh%29)
Based on the given we know the following:
![546cm^{3} =lwh](https://tex.z-dn.net/?f=546cm%5E%7B3%7D%20%3Dlwh)
and
![422cm^{2}=2(lw+lh+wh)](https://tex.z-dn.net/?f=422cm%5E%7B2%7D%3D2%28lw%2Blh%2Bwh%29)
If we factor out the given volume, you can come up with 3 numbers that will satisfy the surface area formula:
![546=6*7*13](https://tex.z-dn.net/?f=546%3D6%2A7%2A13%20)
Let:
l = 6cm
w = 7cm
h = 13cm
Now let's try this on the surface area formula:
![422cm^{2}=2(lw+lh+wh)](https://tex.z-dn.net/?f=422cm%5E%7B2%7D%3D2%28lw%2Blh%2Bwh%29)
![422cm^{2}=2((6cm*7cm)+(6cm*13cm)+(7cm*13cm))](https://tex.z-dn.net/?f=422cm%5E%7B2%7D%3D2%28%286cm%2A7cm%29%2B%286cm%2A13cm%29%2B%287cm%2A13cm%29%29)
![422cm^{2}=2(42cm^{2}+79cm^{2}+91cm^{2})](https://tex.z-dn.net/?f=422cm%5E%7B2%7D%3D2%2842cm%5E%7B2%7D%2B79cm%5E%7B2%7D%2B91cm%5E%7B2%7D%29)
![422cm^{2}=2(211cm^{2})](https://tex.z-dn.net/?f=422cm%5E%7B2%7D%3D2%28211cm%5E%7B2%7D%29)
![422cm^{2}=422cm^{2}](https://tex.z-dn.net/?f=422cm%5E%7B2%7D%3D422cm%5E%7B2%7D)
The answer is then:
l = 6cmw = 7cmh = 13cmAny order would be fine.
Multiply 3 by the denominator, then add the numerator. Then we keep the original denominator.
So we get:
3 x 5 = 15 + 3 = 18
we get:
18/5
Answer:
Lucy is 5(m+3)=65
Soling is 5m-3=65
Kyan is 5m+3=65
Daniel is 5(m-3)=65
Step-by-step explanation: