Question

length breadth and height of a cuboid are 4 cm , 5 cm and 8 cm then find its L.S.A

Answer 1

Answer:

Lateral Surface Area = 2*height(length + breadth)

= 2*8(4+5) = 16*9 = 144

L.S.A = 144cm²

Answer 2

Given,

The length of a cuboid = 4cm.

The breadth of a cuboid = 5cm.

The height of a cuboid = 8cm.

To find out,

The L.S.A of cuboid. It means we have to find out the lateral surface area.

Solution:

$\huge \: Lateral \: surface \: area(L.S.A) of cuboid \: of \: cuboid \: = 2h(l + b)$

Where,

h = height of cuboid

l = length of cuboid

b = breadth of cuboid

Now, substitute the values of length, breadth and height in the formula to find out the lateral surface area of cuboid.

$lateral \: surface \: area \: of \: cuboid \: = 2 \times 8(4 + 5)$

$lateral \: surface \: area \: of \: cuboid \: = 16(9)$

$lateral \: surface \: area \: of \: cuboid \: = 144 {cm}^{2}$

Therefore the lateral surface area of cuboid is 144 square meters.

Additional information:

Cuboid :

● A solid bounded with six rectangular faces.

Formulae:

1) Lateral surface area of cuboid =

2h(l+b)Square units

2)Total surface area of cuboid =2(lb+bh+hl)square units

3)Volume of cuboid =lbh cubic units

4)Length of diagonal of cuboid =

$\sqrt{ {l}^{2} + {b}^{2} + {h}^{2} } \: units$