Question

A edge of cube is 3 cm. Find
Volume
TSA
LSA

Answer 1

LSA -- 4(s) ²

4× (3) ²

4× 9 = 36 cm²

Step-by-step explanation:

Hope it's helpful!!

Answer 2

Formula used

$\to\mathtt \pink{ Curved \: surface \: area \: of \: cube =4a²}\\\\ \to \mathtt \purple{Total \: surface \: Area \: of \: cube = 6a² }$

where a denotes the side of the cube

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Concept used

๑Here the concept of surface area of cube has been used. We will know the formula of CSA and TSA of cube to proceed further with the question.

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Solution

we know that

$\sf{ \to \: Total \: surface \: area \: of \: cube = 6a²} \\ \\ \sf{ \to Total \: surface \: area \: of \: cube= 6×3²}\\\\ \sf{ \to total \: surface \: area \: of \: cube= 6×9}\\\\ \sf{ \to Total \: surface \: area \: of \: cube= \color{red}54 cm²}$

We know that

$\sf{ \to Curved \: surface \: Area \: of\: the \: cube= 4a²}\\\\ \sf{ \to Curved \: surface \: Area \: of \: the \: cube=4×3²}\\\\ \sf{ \to Curved \: surface \: Area \: of \: the \: cube= \color{green}36cm²}$

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More to know

⚘TSA of cuboid = 2(lb + bh + lh)

⚘CSA of cuboid = 2h(l + b)

⚘CSA of a cylinder = 2π × r × h

⚘TSA of a cylinder=2πr(h + r)

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