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romanna [79]
3 years ago
5

A cube with side length 4p is stacked on another cube with side length 2q^2. What is the total volume of the cubes in factored f

orm?
Mathematics
2 answers:
inysia [295]3 years ago
7 0
Volume of the cube with side 4p = 4p x 4p x 4p = 64p³

Volume of the cube with side 2q² =  2q² x  2q² x  2q² = 8q⁶

Total Volume = 64p³ +  8q⁶

Total Volume = (4p)³ + (2q²)³

Total Volume = (4p + 2q²)( ( 4p)² - (4p)(2q²) + (2q²)²)

Total Volume = (4p + 2q²)( 16p² - 8pq² + 4q⁴)

 
Answer:  (4p + 2q²)( 16p² - 8pq² + 4q⁴)
seraphim [82]3 years ago
4 0

we know that

The volume of a cube is equal to

V=b^{3}

where

b is the length side of the cube

Step 1

Find the volume of the cube 1

we have

b=4p\ units

substitute in the formula

V1=(4p)^{3}=64p^{3}\ units^{3}

Step 2

Find the volume of the cube 2

we have

b=2q^{2}\ units

substitute in the formula

V2=(2q^{2})^{3}=8q^{6}\ units^{3}

Step 3

Find the total volume

Adds volume 1 and volume 2

V=64p^{3}\ units^{3}+8q^{6}\ units^{3}

V=(64p^{3}+8q^{6})\ units^{3}

Step 4

<u>Find the volume in factored form</u>

we know that

The sum of cubes is equal to

a^{3} +b^{3} =(a+b)(a^{2} -ab+b^{2})

a=4p\ units

b=2q^{2}\ units

substitute

(64p^{3}+8q^{6})=(4p+2q^{2})((4p)^{2}-(4p)(2q^{2})+(2q^{2})^{2}

=(4p+2q^{2})(16p^{2}-8pq^{2}+4q^{4})

therefore

<u>the answer is</u>

(4p+2q^{2})(16p^{2}-8pq^{2}+4q^{4})\ units^{3}


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