The total surface area of open cube is 80 cm2. Find its volume.
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Step-by-step explanation:
I don't understand your question but
total surface area is
volume of cube is
a is side
Hope it helpful for you
We know that ,
➠ 6s²
Where ,
Given that the cube is open i.e it has only 5 faces hence its total surface area will be :
: ➜ 6s² - s²
: ➜ 5s²
As per the question the total surface area of open cube is 80 cm²
Thus ,
: ➜ 5s² = 80
: ➜
: ➜
: ➜
: ➜ s = 4 cm
➠ s³ ⚊⚊⚊⚊ ⓵
Where ,
⟮ Putting the above value in ⓵ ⟯
: ➜ s³
: ➜ 4³
: : ➨ 64 cu. cm.