Pricing of metal pipe

I wonder if someone could tell me if this is possible and how to set it up in zen cart.

I am selling clamp on pipe fittings and pipe. All the fittings are entered but I am struggling to work out the best way to deal with the pipe.

The pipe is sold per metre. Say £2.40 per metre. The weight is 1.23Kg per metre. The customer will design what the want and then enter the legnth and amout of tubes they want. For example.

They may want 4 tubes at 2.1 metres and 4 tubes at 1.1 metres.

Can zen be setup to take a quantity and a legnth measurement. Then calculate the price and the weight based on this.

Any help appreciated as I'm really stuck to find a way around this.

Regards
Laurie

There would need to be quite a bit of customization but it could be done ...