Jawab:
1) 14 cm
2) 5 cm
3) 17 cm
Penjelasan dengan langkah-langkah:
#1
It talks about the volume of the cuboid.
Do you remember how to find the volume of the cuboid?
Here is the formula:
Vol = area of the base x length of the cuboid
volume = 4900 cm³
area of the base = ?
length of the cuboid = 25
With this formula, we can find the area of the base (the shaded area).
Vol = area of the base x length of the cuboid
4900 = area of the base x 25
area of the base = 4900 : 25
area of the base = 196 cm²
Note that we are asked to find the length of one side of the square. It means we need to find the square root of the area of the base.
area of a square = side x side
side = square root of the area
side = √196
side = 14 cm
#2
This problem is similar to #1, so to find the length of a side of its base we use the same way as #1.
Here is the formula:
Vol = area of the base x length of the cuboid
volume = 425 cm³
area of the base = ?
length of the cuboid = 17
With this formula, we can find the area of the base (the shaded area).
Vol = area of the base x length of the rectangular container
425 = area of the base x 17
area of the base = 425 : 17
area of the base = 25 cm²
Now we need to find the square root of the area of the base.
area of a square = side x side
side = square root of the area
side = √25
side = 5 cm
#3
In this problem we see that we already know the cube's volume.
Do you remember how to find the cube's volume?
It actually has the same concept to the cuboid's volume that we should multiply the area of the base by the height. However, since all of the edges have the same length, we just need to multiply them three times.
Here's the formula how to find the cube's volume:
Vol = edge x edge x edge
Volume = 4913 cm³
edge = ?
We can write the formula like this:
Vol = edge³
4913 = edge³
edge = ∛4913
edge = 17 cm
Hope this explanation can help you.
Jangan sungkan jika ada yang ingin ditanyakan kembali.
