Thread: Width and Height of Solid

The length of a rectangular solid is 7. The width of the solid is 2 more than the height. The volume of the solid is 105. Find the width and the height of the solid.

Hello,

Originally Posted by magentarita

The length of a rectangular solid is 7. The width of the solid is 2 more than the height. The volume of the solid is 105. Find the width and the height of the solid.

Let l, w, h be respectively the length, the width and the height of the solid.

We know that the volume of such a shape is defined as being : V=h*l*w
We know that w=2h ("the width is 2 more than the height)

So

Hence

this is the height. Multiply by 2 to get the width

Originally Posted by Moo

Hello,

Let l, w, h be respectively the length, the width and the height of the solid.

We know that the volume of such a shape is defined as being : V=h*l*w
We know that w=2h ("the width is 2 more than the height)

So

Hence

this is the height. Multiply by 2 to get the width

A very nice reply.