Question

the dimensions of closed cuboid are in the ration 5:4:3 if the total surface area is 0.94m^2

Answer 1

length=5
breadth=4
height=3
think so

Answer 2

Hi ,

Let the dimensions of the closed cuboid

are l , b , h

l : b : h = 5 : 4 : 3

l = 5x m

b = 4x m

h = 3x m

Surface area = 0.94m²

2 ( lb + bh + lh ) = 0.94

5x × 4x + 4x × 3c + 5x × 3x = 0.94 /2

20x² + 12x² + 15x² = 0.47

47x² = 0.47

x² = 0.47/47

x² = 0.01

x² = ( 0.1 )²

x = 0.1

Therefore ,

l = 5x = 5 × 0.1 = 0.5 m= 50cm

b = 4x = 4 × 0.1 = 0.4m = 40cm

h = 3x = 3 × 0.1 = 0.3 m= 30cm

I hope this helps you.

:)