The front elevation, side elevation and plan of a solid are all the same, as shown. (It is shown on the picture provided). Write down the name of the solid

Cube

Step-by-step explanation:

The front elevation, side elevation and plan of a cube are all square

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: