Calculate Cube Volume from 16 cm² Base Area: Step-by-Step Solution

Cube Volume with Base Area Given

Below is a cube with a base area of 16 cm².

Is it possible to calculate the volume of the cube? If so, then what is it?

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Calculate the volume of the cube if possible
00:03 In a cube all edges are equal, let's mark it as A
00:07 We'll use the formula to calculate the base area (edge squared)
00:10 We'll find the square root and get 2 possible solutions
00:15 A must be positive, as it's the length of an edge
00:19 This is the size of edge A
00:23 We'll use the formula to calculate volume (edge cubed)
00:30 We'll substitute the edge value we found and solve for volume
00:34 And this is the solution to the problem

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Below is a cube with a base area of 16 cm².

Is it possible to calculate the volume of the cube? If so, then what is it?

2

Step-by-step solution

To determine if it is possible to calculate the volume of the cube and then find it, we proceed as follows:

  • Step 1: Identify the given information
    The base area of the cube is given as 16cm2 16 \, \text{cm}^2 .
  • Step 2: Apply the appropriate formula for the side length
    Since the base of a cube is a square, we have s2=16 s^2 = 16 , where s s is the side length.
  • Step 3: Calculate the side length
    Solving for s s , we find s=16=4cm s = \sqrt{16} = 4 \, \text{cm} .
  • Step 4: Calculate the volume of the cube
    The volume V V of a cube with side s s is V=s3 V = s^3 . Substituting in the side length, we get V=43=64cm3 V = 4^3 = 64 \, \text{cm}^3 .

Therefore, it is possible to calculate the volume of the cube, and the volume is 64cm3 64 \, \text{cm}^3 .

3

Final Answer

64 64

Key Points to Remember

Essential concepts to master this topic
  • Foundation: Base area of cube equals side squared
  • Technique: From s2=16 s^2 = 16 , find s=4 s = 4 cm
  • Check: Volume 43=64 4^3 = 64 matches cube properties ✓

Common Mistakes

Avoid these frequent errors
  • Using base area as volume directly
    Don't assume 16 cm² is the volume = wrong units and wrong answer! Base area (cm²) measures surface, not space inside. Always find side length first, then cube it for volume (cm³).

Practice Quiz

Test your knowledge with interactive questions

A cube has a total of 14 edges.

FAQ

Everything you need to know about this question

Why can't I just use 16 cm² as the volume?

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Because area and volume are different! Area (cm²) measures flat surface, while volume (cm³) measures 3D space. You need to find the side length first: 16=4 \sqrt{16} = 4 cm.

How do I know if it's possible to find the volume?

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Yes! Since all sides of a cube are equal, knowing any one measurement (like base area) lets you find all others. The base area gives you the side length.

What if I get confused between area and volume formulas?

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Remember: Area uses squares (like s2 s^2 ), Volume uses cubes (like s3 s^3 ). Area = flat, Volume = space inside!

Can I solve this without finding the side length?

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No, you need the side length as an intermediate step. From base area → side length → volume is the logical sequence. There's no direct formula from area to volume.

How do I check if 64 cm³ is correct?

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Work backwards! If volume is 64 cm³, then side = 643=4 \sqrt[3]{64} = 4 cm. Check: base area = 42=16 4^2 = 16 cm² ✓

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