rational or irrational??
1. the diagonal of a square with side lengths of 4cm
2. the height of a prism with a base area 20 ft^2 and a rational volume
3. the perimeter of a circle with a rational radius
4. the area of an isosceles right triangle with an irrational hypotenuse and rational leg lengths

FOR ANYONE WANTING THE ANSWERS IT IS IRRATIONAL FOR 1, RATIONAL FOR 2, IRRATIONAL FOR 3, AND RATIONAL FOR 4

Question

rational or irrational??
1. the diagonal of a square with side lengths of 4cm
2. the height of a prism with a base area 20 ft^2 and a rational volume
3. the perimeter of a circle with a rational radius 
4. the area of an isosceles right triangle with an irrational hypotenuse and rational leg lengths

FOR ANYONE WANTING THE ANSWERS IT IS IRRATIONAL FOR 1, RATIONAL FOR 2, IRRATIONAL FOR 3, AND RATIONAL FOR 4

mathmale · Answer

First:  What does a rational number look lilke?
Second:  If you have any doubt which of the four answer choices is correct, why not actually calculate the quantities shown?  Wouldn't take very long.