Answer :
Answer:
Surface area of 5 sides = 51.2 cm²
Step-by-step explanation:
Given:
Side of cube = 3.2 cm
Find:
Surface area of 5 sides
Computation:
Surface area of 5 sides = Surface area of cube - Surface area 1 side
Surface area of 5 sides = 6a² - a²
Surface area of 5 sides = 6(3.2)² - (3.2)²
Surface area of 5 sides = 6(10.24) - 10.24
Surface area of 5 sides = 6a² - a²
Surface area of 5 sides = 61.44 - 10.24
Surface area of 5 sides = 51.2 cm²
The area of painted surfaces is 51.2 square centimeters.
To understand more, check below explanation.
Surface area:
From the given figure,
It is observed that side of block = 3.2cm
And block is cube.
Since, every surface of the block shown will be painted, except for one of the bases.
Area of painted portion is computed as;
[tex]Area=5*a^{2} \\\\Area=5*(3.2)^{2} \\\\Area=51.2cm^{2}[/tex]
Hence, the area of painted surfaces is 51.2 square centimeters.
Learn more about the surface area here:
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