Question

A cube of side a units is vertically cut into two halves. what is the total surface area of each half​

Answer 1

Answer:

3a^2

Step-by-step explanation:

Total surface area of a cube is 6a^2 then its half will be 3a^2

Answer 2

total surface area = 8a²

Step-by-step explanation:

after cutting a cube into two halves

the width  and height of the new cuboid form will be $\frac{a}{2}, \frac{a}{2}$

length will remain same = a

then surface area = $2\left (a\frac{a}{2}+a^2+a\frac{a}{2}\right ) = 4a^2$

then total surface area = $2(4a^2) = 8a ^2$

for unit cube a = 1

surface area = 8 sq. units

#Learn more:

A solid metallic sphere of radius r units is cut into two equal halves find the total surface area of the two halves

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