Question

Find the csa of cubiod l=10m,b=8m and h=4m​

Answer 1

Answer: 144

Step-by-step explanation:

formula to find csa of a cuboid = 2h[l+b]

given,

l = 10m

b = 8m

h = 4m

as A = 2h[l+b]

2*4[10+8]

=8*18

144

hope this aswer helps you

Answer 2

The Curved surface area (CSA) of a cuboid whose l = 10 m,b = 8m and h = 4m​ is 144 m².

Concept used:

Curved surface area of a cuboid is also known as the lateral surface area or the area of the four walls.

Area of the four walls = Perimeter of the floor × height

Formula used:

Let the length, breadth and height if the cuboid be l, b and h.

Curved surface area of a cuboid/ lateral surface area / area of the four walls = 2(length + breadth) × height

Curved surface area of a cuboid/ lateral surface area / area of the four walls = 2(l + b) × h

Given :  

Length of a cuboid = 10 m

Breadth of cuboid = 8 m

Height of cuboid = 4 m

To find :

CSA of a cuboid

Solution:

Step 1: Substitute the given values in the formula:

Curved/Lateral surface area of cuboid, CSA  = 2(l + b)h

C.S.A of cuboid = 2(10 + 8) × 4  

C.S.A of cuboid = 2 × 18 × 4

C.S.A of cuboid = 144 m²

Hence, the Curved/Lateral surface area of cuboid is 144 m².

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