To which of the following shapes the area can’t be calculated if the perimeter is given?
(a) Circle.
(b) An isoceles right triangle.
(c) Rectangle.
(d) A regular Hexagon.
(e) Square.
The perimeter of a rectangle is 2a + 2b.
In order to calculate the area we need to know the multiplication of a x b.
The best answer is C.