Question

. If the side of a cube is 3cm find its total surface area.
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Answer 1

Given side= 3cm & TSA of cube=6a^2

then,

TSA= 6×(3)^2= 6×9

TSA of cube= 54cm^2.

Answer 2

Answer:

The total surface area of a cube is $54cm^{2}$

Step-by-step explanation:

As per the data given in the above question,

Given that the side of a cube is 3 cm,

We have to find the total surface area of a cube,

Here we have to use the formula of the cube,

$A=6\times a^{2}$

Where a is the side of the cube,

Substitute the value of side in the above area formula we get,

$A=6\times a^{2}$

Squaring a number is to multiplying a number by itself,

$A=6\times 3^{2} \\A=6\times 3\times 3\\A=6\times 9\\A=54$

The total surface area of a cube is $54cm^{2}$