Duct tape not working

Question

My code for this task is not working in cases 3 and 4, I don't know why.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
double height = Convert.ToDouble(Console.ReadLine());
double width = Convert.ToDouble(Console.ReadLine());
double area = (width*height)*2;
double tapearea = 60*0.1667;
double tapes = (area/tapearea);
double tapesfinal = Math.Ceiling(tapes);
Console.WriteLine(tapesfinal);
}
}
}

Answer 1

0.1667 is not the same as 1.0/6.0. Write it as division of the 2 numbers.

Answer 2

Though I am unable to see the Code Coach Pro task, I think that the calculation for tapearea could be more accurate. Is 0.1667 meant to be an approximation of 1/6.0?

Maybe 60/6.0 would be better than 60*0.1667, or just plain 10.0.

Answer 3

Thanks, I thought that rounding the conversion from inches to feet to this value would be enough, but it was not I guess

Answer 4

Forex X ,

Brian's right. Just change this,

double tapearea = 60*0.1667; // 10.002

to this.

double tapearea = 10.0; // 10.0

A roll of tape 60 feet long and 2 inches wide (said the description before pro) has 10 square feet of total area.

Yeah, it does seem weird that the 0.002 square feet difference would make a difference, since you round up to the next roll anyway, but there must be a test case at or near the transition point, where it matters.