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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