Question 59

The total surface area of a closed cube is 1350 $$cm^{2}$$. What is the length of each side of this cube?

Solution

The total surface area of a closed cube is 1350 $$cm^{2}$$.

total surface area of a closed cube = $$6\times\ \left(side\right)^2$$

$$1350 = 6\times\ \left(side\right)^2$$

$$225=\left(side\right)^2$$

$$15^2=\left(side\right)^2$$

So the length of each side of this cube = 15 cm

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