Question

observe the shape of some object 's from your surronding find whether its 2D or 3D shape. draw the 3D objects write their names and formulas to find their surface area and volume

Answer 1

Step-by-step explanation:

the formula to find the surface area is

$a = 6 {a}^{2}$

the formula to find the volume is

$v = {a}^{3}$

Answer 2

Solution :-

2D shape :-

1) Door = Rectangle .

• Area = Length * Breadth .

2) Window = Rectangle and square .

• Area Rectangle shape = Length * Breadth
• Area square shape = (side)² .

3D shape :-

1) Freeze = Cuboid .

• CSA = 2(Length + Breadth) * height .
• TSA = 2(L*B + B*H + H*L)
• Volume = L * B * H
• Here, L = Length , B = Breadth , H = Height .

2) Gas cylinder = Cylinder .

• CSA = 2πrh
• TSA = 2πrh + 2πr² = 2πr(h + r)
• Volume = πr²h
• Here, r = radius , h = height .

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