Question

The area of the four walls of a cuboid is 57 square meters. If its length is 5.5 meters and height is 3 meters, what is its width (in meters)?​

Answer 1

Step-by-step explanation:

l*b*h=57

5.5*3*h=57

16.5h=57

h=57/16.5

=3.45m

Answer 2

Its width is 4 m

Step-by-step explanation:

Area of 4 walls of cuboid = 2(l+b)h

Length = 5.5 m

Height = 3 m

The area of the four walls of a cuboid is 57 square meters.

So, 2(l+b)h=57

$2(5.5+b)(3)=57$

$5.5+b=\frac{57}{2 \times 3}$

$b=\frac{57}{2 \times 3}-5.5$

b=4

Hence Its width is 4 m

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